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Finding the Fourth Proportional to 62,516.70, 86,279.91 and 39,856.50

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Solution

The fourth proportional to 62,516.70, 86,279.91 and 39,856.50 is: 55,006.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,516.70 : 86,279.91 = 39,856.50 : x
  2. Step 2: Convert to fraction form
    62,516.70/86,279.91 = 39,856.50/x
  3. Step 3: Cross multiply
    62,516.70x = 86,279.91 × 39,856.50
  4. Step 4: Simplify right side
    62,516.70x = 3,438,815,232.92
  5. Step 5: Solve for x
    x = 3,438,815,232.92/62,516.70
  6. Step 6: Final answer
    x = 55,006.35

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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.