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Finding the Third Proportional to 630.75 and 951.75

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Solution

The third proportional to 630.75 and 951.75 is: 1,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.75 : 951.75 = 951.75 : x
  2. Step 2: Convert to fraction form
    630.75/951.75 = 951.75/x
  3. Step 3: Cross multiply
    630.75x = 951.75 × 951.75
  4. Step 4: Simplify right side
    630.75x = 905,828.06
  5. Step 5: Solve for x
    x = 905,828.06/630.75
  6. Step 6: Final answer
    x = 1,436.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.