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Finding the Third Proportional to 666 and 1,200

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Solution

The third proportional to 666 and 1,200 is: 2,162.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    666 : 1,200 = 1,200 : x
  2. Step 2: Convert to fraction form
    666/1,200 = 1,200/x
  3. Step 3: Cross multiply
    666x = 1,200 × 1,200
  4. Step 4: Simplify right side
    666x = 1,440,000
  5. Step 5: Solve for x
    x = 1,440,000/666
  6. Step 6: Final answer
    x = 2,162.16

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These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.