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Finding the Third Proportional to 2,015 and 4,899

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Solution

The third proportional to 2,015 and 4,899 is: 11,910.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015 : 4,899 = 4,899 : x
  2. Step 2: Convert to fraction form
    2,015/4,899 = 4,899/x
  3. Step 3: Cross multiply
    2,015x = 4,899 × 4,899
  4. Step 4: Simplify right side
    2,015x = 24,000,201
  5. Step 5: Solve for x
    x = 24,000,201/2,015
  6. Step 6: Final answer
    x = 11,910.77

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Why These Related Problems?

These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.