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Finding the Fourth Proportional to 202,481.40, 303,479.10 and 84,091.80

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Solution

The fourth proportional to 202,481.40, 303,479.10 and 84,091.80 is: 126,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,481.40 : 303,479.10 = 84,091.80 : x
  2. Step 2: Convert to fraction form
    202,481.40/303,479.10 = 84,091.80/x
  3. Step 3: Cross multiply
    202,481.40x = 303,479.10 × 84,091.80
  4. Step 4: Simplify right side
    202,481.40x = 25,520,103,781.38
  5. Step 5: Solve for x
    x = 25,520,103,781.38/202,481.40
  6. Step 6: Final answer
    x = 126,036.78

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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.