38, 57 and 76 LCM
LCM of 38, 57 and 76 is equal to 228. The comprehensive work provides more insight of how to find what is the lcm of 38, 57 and 76 by using prime factors and special division methods, and the example use case of mathematics and real world problems.
what is the lcm of 38, 57 and 76?
lcm (38 57 76) = (?)
38 => 2 x 19
57 => 3 x 19
76 => 2 x 2 x 19
= 2 x 19 x 3 x 2
= 228
lcm (38, 57 and 76) = 228
228 is the lcm of 38, 57 and 76.
where,
38 is a positive integer,
57 is a positive integer,
228 is the lcm of 38, 57 and 76,
{2, 19} in {2 x 19, 3 x 19, 2 x 2 x 19} are the most repeated factors of 38, 57 and 76,
{3, 2} in {2 x 19, 3 x 19, 2 x 2 x 19} are the the other remaining factors of 38, 57 and 76.
Use in Mathematics: LCM of 38, 57 and 76
The below are some of the mathematical applications where lcm of 38, 57 and 76 can be used:
- to find the least number which is exactly divisible by 38, 57 and 76.
- to find the common denominators for the fractions having 38, 57 and 76 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 38, 57 and 76 helps to find the exact time when three similar and recurring with different time schedule happens together at the same time. For example, the real world problems involve lcm in situations to find at what time all the bells A, B and C toll together, if bell A tolls at 38 seconds, B tolls at 57 seconds and C tolls at 76 seconds repeatedly. The answer is that all bells A, B and C toll together at 228 seconds for the first time, at 456 seconds for the second time, at 684 seconds for the third time and so on.
Important Notes: 38, 57 and 76 lcm
The below are the important notes to be remembered while solving the lcm of 38, 57 and 76:
- The repeated and non-repeated prime factors of 38, 57 and 76 should be multiplied to find the least common multiple of 38, 57 and 76, when solving lcm by using prime factors method.
- The results of lcm of 38, 57 and 76 is identical even if we change the order of given numbers in the lcm calculation, it means the order of given numbers in the lcm calculation doesn't affect the results.
How-to: What is the LCM of 38, 57 and 76?
The below solved example with step by step work shows how to find what is the lcm of 38, 57 and 76 by using either prime factors method and special division method.
Solved example using prime factors method:
What is the LCM of 38, 57 and 76?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 38
B = 57
C = 76
What to be found:
find the lcm of 38, 57 and 76
step 2 Find the prime factors of 38, 57 and 76:
Prime factors of 38 = 2 x 19
Prime factors of 57 = 3 x 19
Prime factors of 76 = 2 x 2 x 19
step 3 Identify the repeated and non-repeated prime factors of 38, 57 and 76:
{2, 19} are the most repeated factors and {3, 2} are the non-repeated factors of 38, 57 and 76.
step 4 Find the product of repeated and non-repeated prime factors of 38, 57 and 76:
= 2 x 19 x 3 x 2
= 228
lcm(20 and 30) = 228
Hence,
lcm of 38, 57 and 76 is 228
This special division method is the easiest way to understand the entire calculation of what is the lcm of 38, 57 and 76.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 38, 57 and 76
What to be found:
lcm (38, 57, 76) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
38, 57 and 76
step 3 Choose the divisor which divides each or most of the given integers (38, 57 and 76), divide each integers separately and write down the quotient in the next line right under the respective integers. Bring down the integer to the next line if any integer in 38, 57 and 76 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 38 | 57 | 76 |
| 2 | 19 | 57 | 38 |
| 3 | 19 | 57 | 19 |
| 19 | 19 | 19 | 19 |
| 1 | 1 | 1 |
step 4 Multiply the divisors to find the lcm of 38, 57 and 76:
= 2 x 2 x 3 x 19
= 228
LCM(38, 57, 76) = 228
The least common multiple for three numbers 38, 57 and 76 is 228