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Finding the Fourth Proportional to 18,714.87, 28,092.51 and 16,648.11

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Solution

The fourth proportional to 18,714.87, 28,092.51 and 16,648.11 is: 24,990.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714.87 : 28,092.51 = 16,648.11 : x
  2. Step 2: Convert to fraction form
    18,714.87/28,092.51 = 16,648.11/x
  3. Step 3: Cross multiply
    18,714.87x = 28,092.51 × 16,648.11
  4. Step 4: Simplify right side
    18,714.87x = 467,687,196.66
  5. Step 5: Solve for x
    x = 467,687,196.66/18,714.87
  6. Step 6: Final answer
    x = 24,990.14

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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.