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Finding the Fourth Proportional to 8,690,966.15, 12,192,546.85 and 8,690,966.15

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Solution

The fourth proportional to 8,690,966.15, 12,192,546.85 and 8,690,966.15 is: 12,192,546.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690,966.15 : 12,192,546.85 = 8,690,966.15 : x
  2. Step 2: Convert to fraction form
    8,690,966.15/12,192,546.85 = 8,690,966.15/x
  3. Step 3: Cross multiply
    8,690,966.15x = 12,192,546.85 × 8,690,966.15
  4. Step 4: Simplify right side
    8,690,966.15x = 105,965,011,955,639.12
  5. Step 5: Solve for x
    x = 105,965,011,955,639.12/8,690,966.15
  6. Step 6: Final answer
    x = 12,192,546.85

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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.