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Finding the Third Proportional to 2,674.90 and 2,917.90

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Solution

The third proportional to 2,674.90 and 2,917.90 is: 3,182.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.90 : 2,917.90 = 2,917.90 : x
  2. Step 2: Convert to fraction form
    2,674.90/2,917.90 = 2,917.90/x
  3. Step 3: Cross multiply
    2,674.90x = 2,917.90 × 2,917.90
  4. Step 4: Simplify right side
    2,674.90x = 8,514,131.29
  5. Step 5: Solve for x
    x = 8,514,131.29/2,674.90
  6. Step 6: Final answer
    x = 3,182.97

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.