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Finding the Fourth Proportional to 82,976,330.90, 115,940,115.10 and 82,976,330.90

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Solution

The fourth proportional to 82,976,330.90, 115,940,115.10 and 82,976,330.90 is: 115,940,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,976,330.90 : 115,940,115.10 = 82,976,330.90 : x
  2. Step 2: Convert to fraction form
    82,976,330.90/115,940,115.10 = 82,976,330.90/x
  3. Step 3: Cross multiply
    82,976,330.90x = 115,940,115.10 × 82,976,330.90
  4. Step 4: Simplify right side
    82,976,330.90x = 9,620,285,355,121,686
  5. Step 5: Solve for x
    x = 9,620,285,355,121,686/82,976,330.90
  6. Step 6: Final answer
    x = 115,940,115.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.