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Finding the Fourth Proportional to 71,591.38, 98,793.34 and 39,762.29

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Solution

The fourth proportional to 71,591.38, 98,793.34 and 39,762.29 is: 54,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,591.38 : 98,793.34 = 39,762.29 : x
  2. Step 2: Convert to fraction form
    71,591.38/98,793.34 = 39,762.29/x
  3. Step 3: Cross multiply
    71,591.38x = 98,793.34 × 39,762.29
  4. Step 4: Simplify right side
    71,591.38x = 3,928,249,582.73
  5. Step 5: Solve for x
    x = 3,928,249,582.73/71,591.38
  6. Step 6: Final answer
    x = 54,870.43

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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.