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Finding the Fourth Proportional to 10,992.15, 16,488.08 and 2,672.15

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Solution

The fourth proportional to 10,992.15, 16,488.08 and 2,672.15 is: 4,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.15 : 16,488.08 = 2,672.15 : x
  2. Step 2: Convert to fraction form
    10,992.15/16,488.08 = 2,672.15/x
  3. Step 3: Cross multiply
    10,992.15x = 16,488.08 × 2,672.15
  4. Step 4: Simplify right side
    10,992.15x = 44,058,527.17
  5. Step 5: Solve for x
    x = 44,058,527.17/10,992.15
  6. Step 6: Final answer
    x = 4,008.18

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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.