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Finding the Third Proportional to 39,311.25 and 84,879

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Solution

The third proportional to 39,311.25 and 84,879 is: 183,266.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311.25 : 84,879 = 84,879 : x
  2. Step 2: Convert to fraction form
    39,311.25/84,879 = 84,879/x
  3. Step 3: Cross multiply
    39,311.25x = 84,879 × 84,879
  4. Step 4: Simplify right side
    39,311.25x = 7,204,444,641
  5. Step 5: Solve for x
    x = 7,204,444,641/39,311.25
  6. Step 6: Final answer
    x = 183,266.74

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.