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Finding the Third Proportional to 805 and 1,753

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Solution

The third proportional to 805 and 1,753 is: 3,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    805 : 1,753 = 1,753 : x
  2. Step 2: Convert to fraction form
    805/1,753 = 1,753/x
  3. Step 3: Cross multiply
    805x = 1,753 × 1,753
  4. Step 4: Simplify right side
    805x = 3,073,009
  5. Step 5: Solve for x
    x = 3,073,009/805
  6. Step 6: Final answer
    x = 3,817.40

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.