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Finding the Fourth Proportional to 18,269.62, 27,404.19 and 4,418.50

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Solution

The fourth proportional to 18,269.62, 27,404.19 and 4,418.50 is: 6,627.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.62 : 27,404.19 = 4,418.50 : x
  2. Step 2: Convert to fraction form
    18,269.62/27,404.19 = 4,418.50/x
  3. Step 3: Cross multiply
    18,269.62x = 27,404.19 × 4,418.50
  4. Step 4: Simplify right side
    18,269.62x = 121,085,413.52
  5. Step 5: Solve for x
    x = 121,085,413.52/18,269.62
  6. Step 6: Final answer
    x = 6,627.69

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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.