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Finding the Fourth Proportional to 14,959,909.98, 20,643,787.98 and 8,679,951.90

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Solution

The fourth proportional to 14,959,909.98, 20,643,787.98 and 8,679,951.90 is: 11,977,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,959,909.98 : 20,643,787.98 = 8,679,951.90 : x
  2. Step 2: Convert to fraction form
    14,959,909.98/20,643,787.98 = 8,679,951.90/x
  3. Step 3: Cross multiply
    14,959,909.98x = 20,643,787.98 × 8,679,951.90
  4. Step 4: Simplify right side
    14,959,909.98x = 179,187,086,700,198.19
  5. Step 5: Solve for x
    x = 179,187,086,700,198.19/14,959,909.98
  6. Step 6: Final answer
    x = 11,977,818.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.