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Finding the Fourth Proportional to 15,175.62, 22,791.78 and 12,408.12

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Solution

The fourth proportional to 15,175.62, 22,791.78 and 12,408.12 is: 18,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.62 : 22,791.78 = 12,408.12 : x
  2. Step 2: Convert to fraction form
    15,175.62/22,791.78 = 12,408.12/x
  3. Step 3: Cross multiply
    15,175.62x = 22,791.78 × 12,408.12
  4. Step 4: Simplify right side
    15,175.62x = 282,803,141.25
  5. Step 5: Solve for x
    x = 282,803,141.25/15,175.62
  6. Step 6: Final answer
    x = 18,635.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.