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The first, second and fourth terms in a proportion are 32, 112, 217 respectively. Find the third term.
Find the value of x, if
(а) 8, x, x, 50 are in proportion.
(b) 36, 90, 90, x are in proportion.
Are 20, 25, 12, 15 in proportion?
The cost of 10 tables is ₹ 7500. Find the number of tables that can be purchased with ₹ 9000.
39 packets of 12 pens each costs ₹ 374.40. Find the cost of 52 packets of 10 pens each.