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Finding the Third Proportional to 892.50 and 1,866

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Solution

The third proportional to 892.50 and 1,866 is: 3,901.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.50 : 1,866 = 1,866 : x
  2. Step 2: Convert to fraction form
    892.50/1,866 = 1,866/x
  3. Step 3: Cross multiply
    892.50x = 1,866 × 1,866
  4. Step 4: Simplify right side
    892.50x = 3,481,956
  5. Step 5: Solve for x
    x = 3,481,956/892.50
  6. Step 6: Final answer
    x = 3,901.35

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.