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Finding the Fourth Proportional to 62,644.80, 86,455.20 and 34,355.92

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Solution

The fourth proportional to 62,644.80, 86,455.20 and 34,355.92 is: 47,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,644.80 : 86,455.20 = 34,355.92 : x
  2. Step 2: Convert to fraction form
    62,644.80/86,455.20 = 34,355.92/x
  3. Step 3: Cross multiply
    62,644.80x = 86,455.20 × 34,355.92
  4. Step 4: Simplify right side
    62,644.80x = 2,970,247,934.78
  5. Step 5: Solve for x
    x = 2,970,247,934.78/62,644.80
  6. Step 6: Final answer
    x = 47,414.12

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1.5x scale

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.