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Finding the Fourth Proportional to 18,440.82, 27,661.32 and 4,589.82

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Solution

The fourth proportional to 18,440.82, 27,661.32 and 4,589.82 is: 6,884.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,440.82 : 27,661.32 = 4,589.82 : x
  2. Step 2: Convert to fraction form
    18,440.82/27,661.32 = 4,589.82/x
  3. Step 3: Cross multiply
    18,440.82x = 27,661.32 × 4,589.82
  4. Step 4: Simplify right side
    18,440.82x = 126,960,479.76
  5. Step 5: Solve for x
    x = 126,960,479.76/18,440.82
  6. Step 6: Final answer
    x = 6,884.75

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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.