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Finding the Third Proportional to 39,745.75 and 84,230

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Solution

The third proportional to 39,745.75 and 84,230 is: 178,501.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,745.75 : 84,230 = 84,230 : x
  2. Step 2: Convert to fraction form
    39,745.75/84,230 = 84,230/x
  3. Step 3: Cross multiply
    39,745.75x = 84,230 × 84,230
  4. Step 4: Simplify right side
    39,745.75x = 7,094,692,900
  5. Step 5: Solve for x
    x = 7,094,692,900/39,745.75
  6. Step 6: Final answer
    x = 178,501.93

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.