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Finding the Third Proportional to 3,912.75 and 8,236.13

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Solution

The third proportional to 3,912.75 and 8,236.13 is: 17,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.75 : 8,236.13 = 8,236.13 : x
  2. Step 2: Convert to fraction form
    3,912.75/8,236.13 = 8,236.13/x
  3. Step 3: Cross multiply
    3,912.75x = 8,236.13 × 8,236.13
  4. Step 4: Simplify right side
    3,912.75x = 67,833,755.02
  5. Step 5: Solve for x
    x = 67,833,755.02/3,912.75
  6. Step 6: Final answer
    x = 17,336.59

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.