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Finding the Fourth Proportional to 68,792.62, 103,189.12 and 29,324.56

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Solution

The fourth proportional to 68,792.62, 103,189.12 and 29,324.56 is: 43,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,792.62 : 103,189.12 = 29,324.56 : x
  2. Step 2: Convert to fraction form
    68,792.62/103,189.12 = 29,324.56/x
  3. Step 3: Cross multiply
    68,792.62x = 103,189.12 × 29,324.56
  4. Step 4: Simplify right side
    68,792.62x = 3,025,975,540.79
  5. Step 5: Solve for x
    x = 3,025,975,540.79/68,792.62
  6. Step 6: Final answer
    x = 43,986.92

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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.