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Finding the Third Proportional to 2,398.25 and 5,129.63

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Solution

The third proportional to 2,398.25 and 5,129.63 is: 10,971.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,398.25 : 5,129.63 = 5,129.63 : x
  2. Step 2: Convert to fraction form
    2,398.25/5,129.63 = 5,129.63/x
  3. Step 3: Cross multiply
    2,398.25x = 5,129.63 × 5,129.63
  4. Step 4: Simplify right side
    2,398.25x = 26,313,052.64
  5. Step 5: Solve for x
    x = 26,313,052.64/2,398.25
  6. Step 6: Final answer
    x = 10,971.77

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.