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Finding the Fourth Proportional to 81,487.92, 122,265.60 and 44,003.92

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Solution

The fourth proportional to 81,487.92, 122,265.60 and 44,003.92 is: 66,024.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,487.92 : 122,265.60 = 44,003.92 : x
  2. Step 2: Convert to fraction form
    81,487.92/122,265.60 = 44,003.92/x
  3. Step 3: Cross multiply
    81,487.92x = 122,265.60 × 44,003.92
  4. Step 4: Simplify right side
    81,487.92x = 5,380,165,681.15
  5. Step 5: Solve for x
    x = 5,380,165,681.15/81,487.92
  6. Step 6: Final answer
    x = 66,024.09

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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.