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Finding the Fourth Proportional to 18,564.84, 27,844.56 and 5,413.68

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Solution

The fourth proportional to 18,564.84, 27,844.56 and 5,413.68 is: 8,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,564.84 : 27,844.56 = 5,413.68 : x
  2. Step 2: Convert to fraction form
    18,564.84/27,844.56 = 5,413.68/x
  3. Step 3: Cross multiply
    18,564.84x = 27,844.56 × 5,413.68
  4. Step 4: Simplify right side
    18,564.84x = 150,741,537.58
  5. Step 5: Solve for x
    x = 150,741,537.58/18,564.84
  6. Step 6: Final answer
    x = 8,119.73

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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.