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Finding the Fourth Proportional to 71,898.60, 107,847.90 and 25,140.54

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Solution

The fourth proportional to 71,898.60, 107,847.90 and 25,140.54 is: 37,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,898.60 : 107,847.90 = 25,140.54 : x
  2. Step 2: Convert to fraction form
    71,898.60/107,847.90 = 25,140.54/x
  3. Step 3: Cross multiply
    71,898.60x = 107,847.90 × 25,140.54
  4. Step 4: Simplify right side
    71,898.60x = 2,711,354,443.87
  5. Step 5: Solve for x
    x = 2,711,354,443.87/71,898.60
  6. Step 6: Final answer
    x = 37,710.81

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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.