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Finding the Third Proportional to 2,039 and 5,219

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Solution

The third proportional to 2,039 and 5,219 is: 13,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039 : 5,219 = 5,219 : x
  2. Step 2: Convert to fraction form
    2,039/5,219 = 5,219/x
  3. Step 3: Cross multiply
    2,039x = 5,219 × 5,219
  4. Step 4: Simplify right side
    2,039x = 27,237,961
  5. Step 5: Solve for x
    x = 27,237,961/2,039
  6. Step 6: Final answer
    x = 13,358.49

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.