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Finding the Fourth Proportional to 68,822.60, 103,233.90 and 22,080.20

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Solution

The fourth proportional to 68,822.60, 103,233.90 and 22,080.20 is: 33,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,822.60 : 103,233.90 = 22,080.20 : x
  2. Step 2: Convert to fraction form
    68,822.60/103,233.90 = 22,080.20/x
  3. Step 3: Cross multiply
    68,822.60x = 103,233.90 × 22,080.20
  4. Step 4: Simplify right side
    68,822.60x = 2,279,425,158.78
  5. Step 5: Solve for x
    x = 2,279,425,158.78/68,822.60
  6. Step 6: Final answer
    x = 33,120.30

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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.