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2015-11-24T21:54:18+05:30

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X:5=4:5 
x/5 =4/5
x=4
3:5=x:4
3/5 =x/4
4×3/5 =x
x=12/5
1 5 1
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2015-11-27T21:05:59+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
X:5 = 4:5
Product means = Product of extremes
5x = 5×4
5x = 20
x = 20/5
x = 4

3:5 = x:4
Product of means = Product of extremes 
5x = 3×4
5x = 12
x = 12/5
1 5 1