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Finding the Fourth Proportional to 10,992.65, 16,488.83 and 2,672.64

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Solution

The fourth proportional to 10,992.65, 16,488.83 and 2,672.64 is: 4,008.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.65 : 16,488.83 = 2,672.64 : x
  2. Step 2: Convert to fraction form
    10,992.65/16,488.83 = 2,672.64/x
  3. Step 3: Cross multiply
    10,992.65x = 16,488.83 × 2,672.64
  4. Step 4: Simplify right side
    10,992.65x = 44,068,706.61
  5. Step 5: Solve for x
    x = 44,068,706.61/10,992.65
  6. Step 6: Final answer
    x = 4,008.92

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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.