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Finding the Third Proportional to 711 and 960

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Solution

The third proportional to 711 and 960 is: 1,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    711 : 960 = 960 : x
  2. Step 2: Convert to fraction form
    711/960 = 960/x
  3. Step 3: Cross multiply
    711x = 960 × 960
  4. Step 4: Simplify right side
    711x = 921,600
  5. Step 5: Solve for x
    x = 921,600/711
  6. Step 6: Final answer
    x = 1,296.20

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.