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Finding the Third Proportional to 3,966 and 9,175

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Solution

The third proportional to 3,966 and 9,175 is: 21,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,966 : 9,175 = 9,175 : x
  2. Step 2: Convert to fraction form
    3,966/9,175 = 9,175/x
  3. Step 3: Cross multiply
    3,966x = 9,175 × 9,175
  4. Step 4: Simplify right side
    3,966x = 84,180,625
  5. Step 5: Solve for x
    x = 84,180,625/3,966
  6. Step 6: Final answer
    x = 21,225.57

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.