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Finding the Fourth Proportional to 62,473.92, 86,242.16 and 39,843.28

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Solution

The fourth proportional to 62,473.92, 86,242.16 and 39,843.28 is: 55,001.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,473.92 : 86,242.16 = 39,843.28 : x
  2. Step 2: Convert to fraction form
    62,473.92/86,242.16 = 39,843.28/x
  3. Step 3: Cross multiply
    62,473.92x = 86,242.16 × 39,843.28
  4. Step 4: Simplify right side
    62,473.92x = 3,436,170,528.68
  5. Step 5: Solve for x
    x = 3,436,170,528.68/62,473.92
  6. Step 6: Final answer
    x = 55,001.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.