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Finding the Fourth Proportional to 269,540.40, 404,310.60 and 92,020.80

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Solution

The fourth proportional to 269,540.40, 404,310.60 and 92,020.80 is: 138,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,540.40 : 404,310.60 = 92,020.80 : x
  2. Step 2: Convert to fraction form
    269,540.40/404,310.60 = 92,020.80/x
  3. Step 3: Cross multiply
    269,540.40x = 404,310.60 × 92,020.80
  4. Step 4: Simplify right side
    269,540.40x = 37,204,984,860.48
  5. Step 5: Solve for x
    x = 37,204,984,860.48/269,540.40
  6. Step 6: Final answer
    x = 138,031.20

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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.