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Finding the Fourth Proportional to 68,909.32, 103,369.65 and 29,466.78

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Solution

The fourth proportional to 68,909.32, 103,369.65 and 29,466.78 is: 44,202.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,909.32 : 103,369.65 = 29,466.78 : x
  2. Step 2: Convert to fraction form
    68,909.32/103,369.65 = 29,466.78/x
  3. Step 3: Cross multiply
    68,909.32x = 103,369.65 × 29,466.78
  4. Step 4: Simplify right side
    68,909.32x = 3,045,970,735.23
  5. Step 5: Solve for x
    x = 3,045,970,735.23/68,909.32
  6. Step 6: Final answer
    x = 44,202.59

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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.