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Finding the Fourth Proportional to 71,563.68, 98,753.31 and 39,732.57

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Solution

The fourth proportional to 71,563.68, 98,753.31 and 39,732.57 is: 54,828.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,563.68 : 98,753.31 = 39,732.57 : x
  2. Step 2: Convert to fraction form
    71,563.68/98,753.31 = 39,732.57/x
  3. Step 3: Cross multiply
    71,563.68x = 98,753.31 × 39,732.57
  4. Step 4: Simplify right side
    71,563.68x = 3,923,722,802.31
  5. Step 5: Solve for x
    x = 3,923,722,802.31/71,563.68
  6. Step 6: Final answer
    x = 54,828.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.