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Finding the Fourth Proportional to 18,245.38, 27,366.18 and 4,917.82

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Solution

The fourth proportional to 18,245.38, 27,366.18 and 4,917.82 is: 7,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.38 : 27,366.18 = 4,917.82 : x
  2. Step 2: Convert to fraction form
    18,245.38/27,366.18 = 4,917.82/x
  3. Step 3: Cross multiply
    18,245.38x = 27,366.18 × 4,917.82
  4. Step 4: Simplify right side
    18,245.38x = 134,581,947.33
  5. Step 5: Solve for x
    x = 134,581,947.33/18,245.38
  6. Step 6: Final answer
    x = 7,376.22

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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.