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Finding the Third Proportional to 886 and 1,861

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Solution

The third proportional to 886 and 1,861 is: 3,908.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    886 : 1,861 = 1,861 : x
  2. Step 2: Convert to fraction form
    886/1,861 = 1,861/x
  3. Step 3: Cross multiply
    886x = 1,861 × 1,861
  4. Step 4: Simplify right side
    886x = 3,463,321
  5. Step 5: Solve for x
    x = 3,463,321/886
  6. Step 6: Final answer
    x = 3,908.94

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.