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Finding the Fourth Proportional to 18,544.10, 27,819.65 and 7,451.66

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Solution

The fourth proportional to 18,544.10, 27,819.65 and 7,451.66 is: 11,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,544.10 : 27,819.65 = 7,451.66 : x
  2. Step 2: Convert to fraction form
    18,544.10/27,819.65 = 7,451.66/x
  3. Step 3: Cross multiply
    18,544.10x = 27,819.65 × 7,451.66
  4. Step 4: Simplify right side
    18,544.10x = 207,302,661.30
  5. Step 5: Solve for x
    x = 207,302,661.30/18,544.10
  6. Step 6: Final answer
    x = 11,178.90

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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.