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Finding the Third Proportional to 723.75 and 942.75

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Solution

The third proportional to 723.75 and 942.75 is: 1,228.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.75 : 942.75 = 942.75 : x
  2. Step 2: Convert to fraction form
    723.75/942.75 = 942.75/x
  3. Step 3: Cross multiply
    723.75x = 942.75 × 942.75
  4. Step 4: Simplify right side
    723.75x = 888,777.56
  5. Step 5: Solve for x
    x = 888,777.56/723.75
  6. Step 6: Final answer
    x = 1,228.02

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.