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Finding the Fourth Proportional to 68,771.40, 103,097.10 and 26,680.20

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Solution

The fourth proportional to 68,771.40, 103,097.10 and 26,680.20 is: 39,997.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,771.40 : 103,097.10 = 26,680.20 : x
  2. Step 2: Convert to fraction form
    68,771.40/103,097.10 = 26,680.20/x
  3. Step 3: Cross multiply
    68,771.40x = 103,097.10 × 26,680.20
  4. Step 4: Simplify right side
    68,771.40x = 2,750,651,247.42
  5. Step 5: Solve for x
    x = 2,750,651,247.42/68,771.40
  6. Step 6: Final answer
    x = 39,997.02

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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.