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Finding the Third Proportional to 3,634 and 3,922

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Solution

The third proportional to 3,634 and 3,922 is: 4,232.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,634 : 3,922 = 3,922 : x
  2. Step 2: Convert to fraction form
    3,634/3,922 = 3,922/x
  3. Step 3: Cross multiply
    3,634x = 3,922 × 3,922
  4. Step 4: Simplify right side
    3,634x = 15,382,084
  5. Step 5: Solve for x
    x = 15,382,084/3,634
  6. Step 6: Final answer
    x = 4,232.82

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.