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Finding the Fourth Proportional to 80,481,927.40, 120,722,891.10 and 80,481,927.40

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Solution

The fourth proportional to 80,481,927.40, 120,722,891.10 and 80,481,927.40 is: 120,722,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,481,927.40 : 120,722,891.10 = 80,481,927.40 : x
  2. Step 2: Convert to fraction form
    80,481,927.40/120,722,891.10 = 80,481,927.40/x
  3. Step 3: Cross multiply
    80,481,927.40x = 120,722,891.10 × 80,481,927.40
  4. Step 4: Simplify right side
    80,481,927.40x = 9,716,010,957,028,306
  5. Step 5: Solve for x
    x = 9,716,010,957,028,306/80,481,927.40
  6. Step 6: Final answer
    x = 120,722,891.10

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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.