Three numbers are in the ratio of 2: 3 :4. The sum of their cubes is 33957 . Find the numbers.
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Let the numbers be 2x, 3x and 4x
sum of cubes = 33957
⇒(2x)^3 + (3x)^3 + (4x)^3 = 33957
⇒8x^3 + 27x^3 + 64x^3 = 33957
⇒99x^3 = 33957
⇒x^3 = 33957/99 = 343
⇒x = 3√343 = 7
Numbers are:
2x = 2�7 = 14
3x = 3�7 = 21
4x = 4�7 = 28
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