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Finding the Fourth Proportional to 71,545.60, 107,319.39 and 21,626.11

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Solution

The fourth proportional to 71,545.60, 107,319.39 and 21,626.11 is: 32,439.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,545.60 : 107,319.39 = 21,626.11 : x
  2. Step 2: Convert to fraction form
    71,545.60/107,319.39 = 21,626.11/x
  3. Step 3: Cross multiply
    71,545.60x = 107,319.39 × 21,626.11
  4. Step 4: Simplify right side
    71,545.60x = 2,320,900,933.27
  5. Step 5: Solve for x
    x = 2,320,900,933.27/71,545.60
  6. Step 6: Final answer
    x = 32,439.46

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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.