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Finding the Third Proportional to 2,215.13 and 2,998.69

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Solution

The third proportional to 2,215.13 and 2,998.69 is: 4,059.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.13 : 2,998.69 = 2,998.69 : x
  2. Step 2: Convert to fraction form
    2,215.13/2,998.69 = 2,998.69/x
  3. Step 3: Cross multiply
    2,215.13x = 2,998.69 × 2,998.69
  4. Step 4: Simplify right side
    2,215.13x = 8,992,126.72
  5. Step 5: Solve for x
    x = 8,992,126.72/2,215.13
  6. Step 6: Final answer
    x = 4,059.42

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.