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Finding the Fourth Proportional to 39,892.70, 59,847.15 and 13,600.10

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Solution

The fourth proportional to 39,892.70, 59,847.15 and 13,600.10 is: 20,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,892.70 : 59,847.15 = 13,600.10 : x
  2. Step 2: Convert to fraction form
    39,892.70/59,847.15 = 13,600.10/x
  3. Step 3: Cross multiply
    39,892.70x = 59,847.15 × 13,600.10
  4. Step 4: Simplify right side
    39,892.70x = 813,927,224.72
  5. Step 5: Solve for x
    x = 813,927,224.72/39,892.70
  6. Step 6: Final answer
    x = 20,402.91

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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.