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Finding the Fourth Proportional to 71,425.73, 98,560.87 and 39,591.92

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Solution

The fourth proportional to 71,425.73, 98,560.87 and 39,591.92 is: 54,633.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,425.73 : 98,560.87 = 39,591.92 : x
  2. Step 2: Convert to fraction form
    71,425.73/98,560.87 = 39,591.92/x
  3. Step 3: Cross multiply
    71,425.73x = 98,560.87 × 39,591.92
  4. Step 4: Simplify right side
    71,425.73x = 3,902,213,587.37
  5. Step 5: Solve for x
    x = 3,902,213,587.37/71,425.73
  6. Step 6: Final answer
    x = 54,633.17

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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.