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Finding the Third Proportional to 960.75 and 1,305

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Solution

The third proportional to 960.75 and 1,305 is: 1,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.75 : 1,305 = 1,305 : x
  2. Step 2: Convert to fraction form
    960.75/1,305 = 1,305/x
  3. Step 3: Cross multiply
    960.75x = 1,305 × 1,305
  4. Step 4: Simplify right side
    960.75x = 1,703,025
  5. Step 5: Solve for x
    x = 1,703,025/960.75
  6. Step 6: Final answer
    x = 1,772.60

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.