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Finding the Third Proportional to 888 and 1,225

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Solution

The third proportional to 888 and 1,225 is: 1,689.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    888 : 1,225 = 1,225 : x
  2. Step 2: Convert to fraction form
    888/1,225 = 1,225/x
  3. Step 3: Cross multiply
    888x = 1,225 × 1,225
  4. Step 4: Simplify right side
    888x = 1,500,625
  5. Step 5: Solve for x
    x = 1,500,625/888
  6. Step 6: Final answer
    x = 1,689.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.