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ICSE Class 7 Answered

find fourth proportinal of 3/2, 7/3, 13/4kg
Asked by ks6071288 | 05 Aug, 2020, 11:42: AM
answered-by-expert Expert Answer
Let the fourth proportional be a, we have
3/2 : 7/3 = 13/4 : a
 
3 over 2 a equals 13 over 4 cross times 7 over 3
rightwards double arrow a equals 13 over 4 cross times 7 over 3 cross times 2 over 3 equals 91 over 18
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