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Finding the Third Proportional to 3,864 and 5,682

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Solution

The third proportional to 3,864 and 5,682 is: 8,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864 : 5,682 = 5,682 : x
  2. Step 2: Convert to fraction form
    3,864/5,682 = 5,682/x
  3. Step 3: Cross multiply
    3,864x = 5,682 × 5,682
  4. Step 4: Simplify right side
    3,864x = 32,285,124
  5. Step 5: Solve for x
    x = 32,285,124/3,864
  6. Step 6: Final answer
    x = 8,355.36

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.