first, second and third terms of a proportion are respectively 4,6 and 8. found its fourth term. with statement
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4 : 6 :: 8 : x
Extremes = 4 , x
Means = 6, 8
Product of extremes = product of means
4x = 6 × 8
4x = 48
x = 48 ÷ 4
x = 12
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