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Finding the Fourth Proportional to 453,722.87, 680,425.67 and 133,789.83

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Solution

The fourth proportional to 453,722.87, 680,425.67 and 133,789.83 is: 200,637.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,722.87 : 680,425.67 = 133,789.83 : x
  2. Step 2: Convert to fraction form
    453,722.87/680,425.67 = 133,789.83/x
  3. Step 3: Cross multiply
    453,722.87x = 680,425.67 × 133,789.83
  4. Step 4: Simplify right side
    453,722.87x = 91,034,031,747.25
  5. Step 5: Solve for x
    x = 91,034,031,747.25/453,722.87
  6. Step 6: Final answer
    x = 200,637.96

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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.