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Finding the Fourth Proportional to 68,960.70, 103,354.38 and 29,471.31

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Solution

The fourth proportional to 68,960.70, 103,354.38 and 29,471.31 is: 44,169.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,960.70 : 103,354.38 = 29,471.31 : x
  2. Step 2: Convert to fraction form
    68,960.70/103,354.38 = 29,471.31/x
  3. Step 3: Cross multiply
    68,960.70x = 103,354.38 × 29,471.31
  4. Step 4: Simplify right side
    68,960.70x = 3,045,988,972.84
  5. Step 5: Solve for x
    x = 3,045,988,972.84/68,960.70
  6. Step 6: Final answer
    x = 44,169.93

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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.