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Finding the Third Proportional to 3,861 and 4,293

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Solution

The third proportional to 3,861 and 4,293 is: 4,773.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861 : 4,293 = 4,293 : x
  2. Step 2: Convert to fraction form
    3,861/4,293 = 4,293/x
  3. Step 3: Cross multiply
    3,861x = 4,293 × 4,293
  4. Step 4: Simplify right side
    3,861x = 18,429,849
  5. Step 5: Solve for x
    x = 18,429,849/3,861
  6. Step 6: Final answer
    x = 4,773.34

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.