To find the least common multiple (LCM) of 45, 54, and 72, we first need to find the prime factorization of each number. The prime factorization of 45 is 3^2 * 5, 54 is 2 * 3^3, and 72 is 2^3 * 3^2. Then, we take the highest power of each prime factor that appears in any of the numbers: 2^3 * 3^3 * 5 = 540. Therefore, the LCM of 45, 54, and 72 is 540.
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The LCM is 432.
The LCM is 1080.
270
The LCM is 72.
The least common multiple is the smallest positive number that is the multiple two or more numbers. 18: 18, 36, 54, 72, 90 30: 30, 60, 90 45: 45, 90 The LCM of 18, 30 and 45 is 90.