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Finding the Third Proportional to 723.75 and 996.25

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Solution

The third proportional to 723.75 and 996.25 is: 1,371.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.75 : 996.25 = 996.25 : x
  2. Step 2: Convert to fraction form
    723.75/996.25 = 996.25/x
  3. Step 3: Cross multiply
    723.75x = 996.25 × 996.25
  4. Step 4: Simplify right side
    723.75x = 992,514.06
  5. Step 5: Solve for x
    x = 992,514.06/723.75
  6. Step 6: Final answer
    x = 1,371.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.