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Finding the Third Proportional to 726 and 1,762

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Solution

The third proportional to 726 and 1,762 is: 4,276.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    726 : 1,762 = 1,762 : x
  2. Step 2: Convert to fraction form
    726/1,762 = 1,762/x
  3. Step 3: Cross multiply
    726x = 1,762 × 1,762
  4. Step 4: Simplify right side
    726x = 3,104,644
  5. Step 5: Solve for x
    x = 3,104,644/726
  6. Step 6: Final answer
    x = 4,276.37

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Why These Related Problems?

These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.