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Finding the Third Proportional to 2,015 and 3,174

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Solution

The third proportional to 2,015 and 3,174 is: 4,999.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015 : 3,174 = 3,174 : x
  2. Step 2: Convert to fraction form
    2,015/3,174 = 3,174/x
  3. Step 3: Cross multiply
    2,015x = 3,174 × 3,174
  4. Step 4: Simplify right side
    2,015x = 10,074,276
  5. Step 5: Solve for x
    x = 10,074,276/2,015
  6. Step 6: Final answer
    x = 4,999.64

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.