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Finding the Third Proportional to 39,138.75 and 84,529

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Solution

The third proportional to 39,138.75 and 84,529 is: 182,559.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138.75 : 84,529 = 84,529 : x
  2. Step 2: Convert to fraction form
    39,138.75/84,529 = 84,529/x
  3. Step 3: Cross multiply
    39,138.75x = 84,529 × 84,529
  4. Step 4: Simplify right side
    39,138.75x = 7,145,151,841
  5. Step 5: Solve for x
    x = 7,145,151,841/39,138.75
  6. Step 6: Final answer
    x = 182,559.53

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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.