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Finding the Fourth Proportional to 18,591.90, 27,891.10 and 6,108.46

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Solution

The fourth proportional to 18,591.90, 27,891.10 and 6,108.46 is: 9,163.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.90 : 27,891.10 = 6,108.46 : x
  2. Step 2: Convert to fraction form
    18,591.90/27,891.10 = 6,108.46/x
  3. Step 3: Cross multiply
    18,591.90x = 27,891.10 × 6,108.46
  4. Step 4: Simplify right side
    18,591.90x = 170,371,668.71
  5. Step 5: Solve for x
    x = 170,371,668.71/18,591.90
  6. Step 6: Final answer
    x = 9,163.76

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1.5x scale

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.