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Finding the Third Proportional to 3,966 and 6,120

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Solution

The third proportional to 3,966 and 6,120 is: 9,443.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,966 : 6,120 = 6,120 : x
  2. Step 2: Convert to fraction form
    3,966/6,120 = 6,120/x
  3. Step 3: Cross multiply
    3,966x = 6,120 × 6,120
  4. Step 4: Simplify right side
    3,966x = 37,454,400
  5. Step 5: Solve for x
    x = 37,454,400/3,966
  6. Step 6: Final answer
    x = 9,443.87

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.