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Finding the Fourth Proportional to 68,945.97, 103,450.15 and 35,194.56

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Solution

The fourth proportional to 68,945.97, 103,450.15 and 35,194.56 is: 52,807.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,945.97 : 103,450.15 = 35,194.56 : x
  2. Step 2: Convert to fraction form
    68,945.97/103,450.15 = 35,194.56/x
  3. Step 3: Cross multiply
    68,945.97x = 103,450.15 × 35,194.56
  4. Step 4: Simplify right side
    68,945.97x = 3,640,882,167.24
  5. Step 5: Solve for x
    x = 3,640,882,167.24/68,945.97
  6. Step 6: Final answer
    x = 52,807.76

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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.