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Finding the Fourth Proportional to 372,211.20, 558,489.60 and 194,918.40

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Solution

The fourth proportional to 372,211.20, 558,489.60 and 194,918.40 is: 292,468.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,211.20 : 558,489.60 = 194,918.40 : x
  2. Step 2: Convert to fraction form
    372,211.20/558,489.60 = 194,918.40/x
  3. Step 3: Cross multiply
    372,211.20x = 558,489.60 × 194,918.40
  4. Step 4: Simplify right side
    372,211.20x = 108,859,899,248.64
  5. Step 5: Solve for x
    x = 108,859,899,248.64/372,211.20
  6. Step 6: Final answer
    x = 292,468.09

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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.