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Finding the Third Proportional to 644.06 and 960.75

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Solution

The third proportional to 644.06 and 960.75 is: 1,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.06 : 960.75 = 960.75 : x
  2. Step 2: Convert to fraction form
    644.06/960.75 = 960.75/x
  3. Step 3: Cross multiply
    644.06x = 960.75 × 960.75
  4. Step 4: Simplify right side
    644.06x = 923,040.56
  5. Step 5: Solve for x
    x = 923,040.56/644.06
  6. Step 6: Final answer
    x = 1,433.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.