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Finding the Fourth Proportional to 372,067.90, 558,231.45 and 161,856.70

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Solution

The fourth proportional to 372,067.90, 558,231.45 and 161,856.70 is: 242,841.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,067.90 : 558,231.45 = 161,856.70 : x
  2. Step 2: Convert to fraction form
    372,067.90/558,231.45 = 161,856.70/x
  3. Step 3: Cross multiply
    372,067.90x = 558,231.45 × 161,856.70
  4. Step 4: Simplify right side
    372,067.90x = 90,353,500,333.22
  5. Step 5: Solve for x
    x = 90,353,500,333.22/372,067.90
  6. Step 6: Final answer
    x = 242,841.43

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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.