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Finding the Third Proportional to 3,969 and 9,163.13

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Solution

The third proportional to 3,969 and 9,163.13 is: 21,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969 : 9,163.13 = 9,163.13 : x
  2. Step 2: Convert to fraction form
    3,969/9,163.13 = 9,163.13/x
  3. Step 3: Cross multiply
    3,969x = 9,163.13 × 9,163.13
  4. Step 4: Simplify right side
    3,969x = 83,962,859.77
  5. Step 5: Solve for x
    x = 83,962,859.77/3,969
  6. Step 6: Final answer
    x = 21,154.66

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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.