Question

in a proportion the first second and fourth terms are 51 ,68 and 108 respectively find the third term

Answer 1

Let the third term be x.
By the question,
51/68 = x/108
or, x = 51*108/68
or, x = 81

Answer 2

Let the third term x.

51×108 = 5508

5508/68=81

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