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Finding the Fourth Proportional to 8,690,974.15, 12,192,558.05 and 8,690,974.15

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Solution

The fourth proportional to 8,690,974.15, 12,192,558.05 and 8,690,974.15 is: 12,192,558.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690,974.15 : 12,192,558.05 = 8,690,974.15 : x
  2. Step 2: Convert to fraction form
    8,690,974.15/12,192,558.05 = 8,690,974.15/x
  3. Step 3: Cross multiply
    8,690,974.15x = 12,192,558.05 × 8,690,974.15
  4. Step 4: Simplify right side
    8,690,974.15x = 105,965,206,834,924.42
  5. Step 5: Solve for x
    x = 105,965,206,834,924.42/8,690,974.15
  6. Step 6: Final answer
    x = 12,192,558.05

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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.