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Finding the Fourth Proportional to 170,969.92, 256,428.96 and 60,136

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Solution

The fourth proportional to 170,969.92, 256,428.96 and 60,136 is: 90,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,969.92 : 256,428.96 = 60,136 : x
  2. Step 2: Convert to fraction form
    170,969.92/256,428.96 = 60,136/x
  3. Step 3: Cross multiply
    170,969.92x = 256,428.96 × 60,136
  4. Step 4: Simplify right side
    170,969.92x = 15,420,611,938.56
  5. Step 5: Solve for x
    x = 15,420,611,938.56/170,969.92
  6. Step 6: Final answer
    x = 90,194.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.