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Finding the Fourth Proportional to 69,175.61, 103,720.78 and 27,006.60

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Solution

The fourth proportional to 69,175.61, 103,720.78 and 27,006.60 is: 40,493.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,175.61 : 103,720.78 = 27,006.60 : x
  2. Step 2: Convert to fraction form
    69,175.61/103,720.78 = 27,006.60/x
  3. Step 3: Cross multiply
    69,175.61x = 103,720.78 × 27,006.60
  4. Step 4: Simplify right side
    69,175.61x = 2,801,145,617.15
  5. Step 5: Solve for x
    x = 2,801,145,617.15/69,175.61
  6. Step 6: Final answer
    x = 40,493.26

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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.