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Finding the Fourth Proportional to 469,540.80, 704,311.20 and 137,116.80

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Solution

The fourth proportional to 469,540.80, 704,311.20 and 137,116.80 is: 205,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,540.80 : 704,311.20 = 137,116.80 : x
  2. Step 2: Convert to fraction form
    469,540.80/704,311.20 = 137,116.80/x
  3. Step 3: Cross multiply
    469,540.80x = 704,311.20 × 137,116.80
  4. Step 4: Simplify right side
    469,540.80x = 96,572,897,948.16
  5. Step 5: Solve for x
    x = 96,572,897,948.16/469,540.80
  6. Step 6: Final answer
    x = 205,675.20

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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.