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Finding the Fourth Proportional to 18,671.88, 25,763.62 and 11,600.04

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Solution

The fourth proportional to 18,671.88, 25,763.62 and 11,600.04 is: 16,005.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.88 : 25,763.62 = 11,600.04 : x
  2. Step 2: Convert to fraction form
    18,671.88/25,763.62 = 11,600.04/x
  3. Step 3: Cross multiply
    18,671.88x = 25,763.62 × 11,600.04
  4. Step 4: Simplify right side
    18,671.88x = 298,859,022.54
  5. Step 5: Solve for x
    x = 298,859,022.54/18,671.88
  6. Step 6: Final answer
    x = 16,005.83

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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.