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Finding the Fourth Proportional to 18,591.85, 27,851.23 and 11,174.41

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Solution

The fourth proportional to 18,591.85, 27,851.23 and 11,174.41 is: 16,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.85 : 27,851.23 = 11,174.41 : x
  2. Step 2: Convert to fraction form
    18,591.85/27,851.23 = 11,174.41/x
  3. Step 3: Cross multiply
    18,591.85x = 27,851.23 × 11,174.41
  4. Step 4: Simplify right side
    18,591.85x = 311,221,063.02
  5. Step 5: Solve for x
    x = 311,221,063.02/18,591.85
  6. Step 6: Final answer
    x = 16,739.65

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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.