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Finding the Third Proportional to 960 and 1,785

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Solution

The third proportional to 960 and 1,785 is: 3,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    960 : 1,785 = 1,785 : x
  2. Step 2: Convert to fraction form
    960/1,785 = 1,785/x
  3. Step 3: Cross multiply
    960x = 1,785 × 1,785
  4. Step 4: Simplify right side
    960x = 3,186,225
  5. Step 5: Solve for x
    x = 3,186,225/960
  6. Step 6: Final answer
    x = 3,318.98

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.