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Finding the Third Proportional to 734.44 and 978.75

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Solution

The third proportional to 734.44 and 978.75 is: 1,304.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.44 : 978.75 = 978.75 : x
  2. Step 2: Convert to fraction form
    734.44/978.75 = 978.75/x
  3. Step 3: Cross multiply
    734.44x = 978.75 × 978.75
  4. Step 4: Simplify right side
    734.44x = 957,951.56
  5. Step 5: Solve for x
    x = 957,951.56/734.44
  6. Step 6: Final answer
    x = 1,304.33

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.