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Finding the Fourth Proportional to 381,631.60, 572,532.36 and 125,475.76

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Solution

The fourth proportional to 381,631.60, 572,532.36 and 125,475.76 is: 188,241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,631.60 : 572,532.36 = 125,475.76 : x
  2. Step 2: Convert to fraction form
    381,631.60/572,532.36 = 125,475.76/x
  3. Step 3: Cross multiply
    381,631.60x = 572,532.36 × 125,475.76
  4. Step 4: Simplify right side
    381,631.60x = 71,838,932,995.59
  5. Step 5: Solve for x
    x = 71,838,932,995.59/381,631.60
  6. Step 6: Final answer
    x = 188,241.57

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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.