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Finding the Fourth Proportional to 71,688.63, 107,545.93 and 29,545.25

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Solution

The fourth proportional to 71,688.63, 107,545.93 and 29,545.25 is: 44,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,688.63 : 107,545.93 = 29,545.25 : x
  2. Step 2: Convert to fraction form
    71,688.63/107,545.93 = 29,545.25/x
  3. Step 3: Cross multiply
    71,688.63x = 107,545.93 × 29,545.25
  4. Step 4: Simplify right side
    71,688.63x = 3,177,471,583.33
  5. Step 5: Solve for x
    x = 3,177,471,583.33/71,688.63
  6. Step 6: Final answer
    x = 44,323.23

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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.