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Finding the Third Proportional to 2,961.56 and 3,912.68

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Solution

The third proportional to 2,961.56 and 3,912.68 is: 5,169.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.56 : 3,912.68 = 3,912.68 : x
  2. Step 2: Convert to fraction form
    2,961.56/3,912.68 = 3,912.68/x
  3. Step 3: Cross multiply
    2,961.56x = 3,912.68 × 3,912.68
  4. Step 4: Simplify right side
    2,961.56x = 15,309,062.34
  5. Step 5: Solve for x
    x = 15,309,062.34/2,961.56
  6. Step 6: Final answer
    x = 5,169.25

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.