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Finding the Fourth Proportional to 68,682.20, 103,023.30 and 29,240.60

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Solution

The fourth proportional to 68,682.20, 103,023.30 and 29,240.60 is: 43,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,682.20 : 103,023.30 = 29,240.60 : x
  2. Step 2: Convert to fraction form
    68,682.20/103,023.30 = 29,240.60/x
  3. Step 3: Cross multiply
    68,682.20x = 103,023.30 × 29,240.60
  4. Step 4: Simplify right side
    68,682.20x = 3,012,463,105.98
  5. Step 5: Solve for x
    x = 3,012,463,105.98/68,682.20
  6. Step 6: Final answer
    x = 43,860.90

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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.