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Finding the Fourth Proportional to 62,607.92, 86,348.61 and 55,038.20

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Solution

The fourth proportional to 62,607.92, 86,348.61 and 55,038.20 is: 75,908.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,607.92 : 86,348.61 = 55,038.20 : x
  2. Step 2: Convert to fraction form
    62,607.92/86,348.61 = 55,038.20/x
  3. Step 3: Cross multiply
    62,607.92x = 86,348.61 × 55,038.20
  4. Step 4: Simplify right side
    62,607.92x = 4,752,471,635.16
  5. Step 5: Solve for x
    x = 4,752,471,635.16/62,607.92
  6. Step 6: Final answer
    x = 75,908.48

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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.