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Finding the Third Proportional to 709.50 and 948.75

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Solution

The third proportional to 709.50 and 948.75 is: 1,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.50 : 948.75 = 948.75 : x
  2. Step 2: Convert to fraction form
    709.50/948.75 = 948.75/x
  3. Step 3: Cross multiply
    709.50x = 948.75 × 948.75
  4. Step 4: Simplify right side
    709.50x = 900,126.56
  5. Step 5: Solve for x
    x = 900,126.56/709.50
  6. Step 6: Final answer
    x = 1,268.68

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.