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Finding the Fourth Proportional to 392,027.67, 587,986.16 and 125,753.58

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Solution

The fourth proportional to 392,027.67, 587,986.16 and 125,753.58 is: 188,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,027.67 : 587,986.16 = 125,753.58 : x
  2. Step 2: Convert to fraction form
    392,027.67/587,986.16 = 125,753.58/x
  3. Step 3: Cross multiply
    392,027.67x = 587,986.16 × 125,753.58
  4. Step 4: Simplify right side
    392,027.67x = 73,941,363,981.68
  5. Step 5: Solve for x
    x = 73,941,363,981.68/392,027.67
  6. Step 6: Final answer
    x = 188,612.61

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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.