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Finding the Fourth Proportional to 10,899.88, 16,349.82 and 2,691.88

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Solution

The fourth proportional to 10,899.88, 16,349.82 and 2,691.88 is: 4,037.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.88 : 16,349.82 = 2,691.88 : x
  2. Step 2: Convert to fraction form
    10,899.88/16,349.82 = 2,691.88/x
  3. Step 3: Cross multiply
    10,899.88x = 16,349.82 × 2,691.88
  4. Step 4: Simplify right side
    10,899.88x = 44,011,753.46
  5. Step 5: Solve for x
    x = 44,011,753.46/10,899.88
  6. Step 6: Final answer
    x = 4,037.82

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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.