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Finding the Third Proportional to 966 and 1,985

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Solution

The third proportional to 966 and 1,985 is: 4,078.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    966 : 1,985 = 1,985 : x
  2. Step 2: Convert to fraction form
    966/1,985 = 1,985/x
  3. Step 3: Cross multiply
    966x = 1,985 × 1,985
  4. Step 4: Simplify right side
    966x = 3,940,225
  5. Step 5: Solve for x
    x = 3,940,225/966
  6. Step 6: Final answer
    x = 4,078.91

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.