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Finding the Fourth Proportional to 71,734.20, 107,471.70 and 61,366.20

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Solution

The fourth proportional to 71,734.20, 107,471.70 and 61,366.20 is: 91,938.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,734.20 : 107,471.70 = 61,366.20 : x
  2. Step 2: Convert to fraction form
    71,734.20/107,471.70 = 61,366.20/x
  3. Step 3: Cross multiply
    71,734.20x = 107,471.70 × 61,366.20
  4. Step 4: Simplify right side
    71,734.20x = 6,595,129,836.54
  5. Step 5: Solve for x
    x = 6,595,129,836.54/71,734.20
  6. Step 6: Final answer
    x = 91,938.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.