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Finding the Third Proportional to 960 and 2,106.75

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Solution

The third proportional to 960 and 2,106.75 is: 4,623.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    960 : 2,106.75 = 2,106.75 : x
  2. Step 2: Convert to fraction form
    960/2,106.75 = 2,106.75/x
  3. Step 3: Cross multiply
    960x = 2,106.75 × 2,106.75
  4. Step 4: Simplify right side
    960x = 4,438,395.56
  5. Step 5: Solve for x
    x = 4,438,395.56/960
  6. Step 6: Final answer
    x = 4,623.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.