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Finding the Fourth Proportional to 18,761.62, 25,902.84 and 12,049.96

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Solution

The fourth proportional to 18,761.62, 25,902.84 and 12,049.96 is: 16,636.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.62 : 25,902.84 = 12,049.96 : x
  2. Step 2: Convert to fraction form
    18,761.62/25,902.84 = 12,049.96/x
  3. Step 3: Cross multiply
    18,761.62x = 25,902.84 × 12,049.96
  4. Step 4: Simplify right side
    18,761.62x = 312,128,185.89
  5. Step 5: Solve for x
    x = 312,128,185.89/18,761.62
  6. Step 6: Final answer
    x = 16,636.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.