8) First, second and third terms of a proportion are 21,49&33 respectively.
Find its fourth term.
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17
Answer:
If they are in proportion then the product of means and extremes should be same..
Let fourth term be x
Product of extremes = 21x
Product of means = 49*33
x = 49*33/21 = 77
So 77 is your answer mate..
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3
7*3=21 , 7*7=49 .....11*3=33 , 11*7=77 the forth term is 77
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