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Finding the Fourth Proportional to 62,465.60, 86,138.08 and 53,542.72

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Solution

The fourth proportional to 62,465.60, 86,138.08 and 53,542.72 is: 73,833.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,465.60 : 86,138.08 = 53,542.72 : x
  2. Step 2: Convert to fraction form
    62,465.60/86,138.08 = 53,542.72/x
  3. Step 3: Cross multiply
    62,465.60x = 86,138.08 × 53,542.72
  4. Step 4: Simplify right side
    62,465.60x = 4,612,067,098.78
  5. Step 5: Solve for x
    x = 4,612,067,098.78/62,465.60
  6. Step 6: Final answer
    x = 73,833.71

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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.