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Finding the Third Proportional to 890 and 2,174

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Solution

The third proportional to 890 and 2,174 is: 5,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    890 : 2,174 = 2,174 : x
  2. Step 2: Convert to fraction form
    890/2,174 = 2,174/x
  3. Step 3: Cross multiply
    890x = 2,174 × 2,174
  4. Step 4: Simplify right side
    890x = 4,726,276
  5. Step 5: Solve for x
    x = 4,726,276/890
  6. Step 6: Final answer
    x = 5,310.42

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Why These Related Problems?

These problems maintain the same ratio (2.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.