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Finding the Fourth Proportional to 18,441.61, 27,662.38 and 4,590.61

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Solution

The fourth proportional to 18,441.61, 27,662.38 and 4,590.61 is: 6,885.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441.61 : 27,662.38 = 4,590.61 : x
  2. Step 2: Convert to fraction form
    18,441.61/27,662.38 = 4,590.61/x
  3. Step 3: Cross multiply
    18,441.61x = 27,662.38 × 4,590.61
  4. Step 4: Simplify right side
    18,441.61x = 126,987,198.25
  5. Step 5: Solve for x
    x = 126,987,198.25/18,441.61
  6. Step 6: Final answer
    x = 6,885.91

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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.