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Finding the Third Proportional to 3,986 and 9,434

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Solution

The third proportional to 3,986 and 9,434 is: 22,328.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986 : 9,434 = 9,434 : x
  2. Step 2: Convert to fraction form
    3,986/9,434 = 9,434/x
  3. Step 3: Cross multiply
    3,986x = 9,434 × 9,434
  4. Step 4: Simplify right side
    3,986x = 89,000,356
  5. Step 5: Solve for x
    x = 89,000,356/3,986
  6. Step 6: Final answer
    x = 22,328.24

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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.