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Finding the Fourth Proportional to 10,992.52, 16,488.78 and 2,672.48

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Solution

The fourth proportional to 10,992.52, 16,488.78 and 2,672.48 is: 4,008.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.52 : 16,488.78 = 2,672.48 : x
  2. Step 2: Convert to fraction form
    10,992.52/16,488.78 = 2,672.48/x
  3. Step 3: Cross multiply
    10,992.52x = 16,488.78 × 2,672.48
  4. Step 4: Simplify right side
    10,992.52x = 44,065,965.97
  5. Step 5: Solve for x
    x = 44,065,965.97/10,992.52
  6. Step 6: Final answer
    x = 4,008.72

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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.