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Finding the Third Proportional to 4,393 and 4,861

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Solution

The third proportional to 4,393 and 4,861 is: 5,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,393 : 4,861 = 4,861 : x
  2. Step 2: Convert to fraction form
    4,393/4,861 = 4,861/x
  3. Step 3: Cross multiply
    4,393x = 4,861 × 4,861
  4. Step 4: Simplify right side
    4,393x = 23,629,321
  5. Step 5: Solve for x
    x = 23,629,321/4,393
  6. Step 6: Final answer
    x = 5,378.86

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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.