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Finding the Fourth Proportional to 198,799.62, 298,198.04 and 80,469.24

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Solution

The fourth proportional to 198,799.62, 298,198.04 and 80,469.24 is: 120,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,799.62 : 298,198.04 = 80,469.24 : x
  2. Step 2: Convert to fraction form
    198,799.62/298,198.04 = 80,469.24/x
  3. Step 3: Cross multiply
    198,799.62x = 298,198.04 × 80,469.24
  4. Step 4: Simplify right side
    198,799.62x = 23,995,769,245.94
  5. Step 5: Solve for x
    x = 23,995,769,245.94/198,799.62
  6. Step 6: Final answer
    x = 120,703.30

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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.