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Finding the Third Proportional to 3,969 and 9,403

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Solution

The third proportional to 3,969 and 9,403 is: 22,276.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969 : 9,403 = 9,403 : x
  2. Step 2: Convert to fraction form
    3,969/9,403 = 9,403/x
  3. Step 3: Cross multiply
    3,969x = 9,403 × 9,403
  4. Step 4: Simplify right side
    3,969x = 88,416,409
  5. Step 5: Solve for x
    x = 88,416,409/3,969
  6. Step 6: Final answer
    x = 22,276.75

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.