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Finding the Fourth Proportional to 18,392.76, 27,591.66 and 5,909.82

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Solution

The fourth proportional to 18,392.76, 27,591.66 and 5,909.82 is: 8,865.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.76 : 27,591.66 = 5,909.82 : x
  2. Step 2: Convert to fraction form
    18,392.76/27,591.66 = 5,909.82/x
  3. Step 3: Cross multiply
    18,392.76x = 27,591.66 × 5,909.82
  4. Step 4: Simplify right side
    18,392.76x = 163,061,744.10
  5. Step 5: Solve for x
    x = 163,061,744.10/18,392.76
  6. Step 6: Final answer
    x = 8,865.54

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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.