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Finding the Fourth Proportional to 10,992,512.70, 16,488,769.05 and 9,228,915.90

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Solution

The fourth proportional to 10,992,512.70, 16,488,769.05 and 9,228,915.90 is: 13,843,373.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992,512.70 : 16,488,769.05 = 9,228,915.90 : x
  2. Step 2: Convert to fraction form
    10,992,512.70/16,488,769.05 = 9,228,915.90/x
  3. Step 3: Cross multiply
    10,992,512.70x = 16,488,769.05 × 9,228,915.90
  4. Step 4: Simplify right side
    10,992,512.70x = 152,173,462,856,972.91
  5. Step 5: Solve for x
    x = 152,173,462,856,972.91/10,992,512.70
  6. Step 6: Final answer
    x = 13,843,373.85

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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.