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Finding the Fourth Proportional to 527,809.20, 791,713.87 and 128,449.97

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Solution

The fourth proportional to 527,809.20, 791,713.87 and 128,449.97 is: 192,674.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,809.20 : 791,713.87 = 128,449.97 : x
  2. Step 2: Convert to fraction form
    527,809.20/791,713.87 = 128,449.97/x
  3. Step 3: Cross multiply
    527,809.20x = 791,713.87 × 128,449.97
  4. Step 4: Simplify right side
    527,809.20x = 101,695,618,249.27
  5. Step 5: Solve for x
    x = 101,695,618,249.27/527,809.20
  6. Step 6: Final answer
    x = 192,674.97

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Similar ratio
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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.