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Finding the Fourth Proportional to 18,874, 28,311.12 and 6,562

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Solution

The fourth proportional to 18,874, 28,311.12 and 6,562 is: 9,843.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,874 : 28,311.12 = 6,562 : x
  2. Step 2: Convert to fraction form
    18,874/28,311.12 = 6,562/x
  3. Step 3: Cross multiply
    18,874x = 28,311.12 × 6,562
  4. Step 4: Simplify right side
    18,874x = 185,777,569.44
  5. Step 5: Solve for x
    x = 185,777,569.44/18,874
  6. Step 6: Final answer
    x = 9,843.04

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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.