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Finding the Fourth Proportional to 18,045.90, 27,069.06 and 5,565.82

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Solution

The fourth proportional to 18,045.90, 27,069.06 and 5,565.82 is: 8,348.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,045.90 : 27,069.06 = 5,565.82 : x
  2. Step 2: Convert to fraction form
    18,045.90/27,069.06 = 5,565.82/x
  3. Step 3: Cross multiply
    18,045.90x = 27,069.06 × 5,565.82
  4. Step 4: Simplify right side
    18,045.90x = 150,661,515.53
  5. Step 5: Solve for x
    x = 150,661,515.53/18,045.90
  6. Step 6: Final answer
    x = 8,348.79

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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.