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Finding the Fourth Proportional to 392,132.56, 588,143.22 and 125,858.62

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Solution

The fourth proportional to 392,132.56, 588,143.22 and 125,858.62 is: 188,770.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,132.56 : 588,143.22 = 125,858.62 : x
  2. Step 2: Convert to fraction form
    392,132.56/588,143.22 = 125,858.62/x
  3. Step 3: Cross multiply
    392,132.56x = 588,143.22 × 125,858.62
  4. Step 4: Simplify right side
    392,132.56x = 74,022,894,031.56
  5. Step 5: Solve for x
    x = 74,022,894,031.56/392,132.56
  6. Step 6: Final answer
    x = 188,770.08

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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.