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Finding the Third Proportional to 57,378 and 84,183

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Solution

The third proportional to 57,378 and 84,183 is: 123,510.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,378 : 84,183 = 84,183 : x
  2. Step 2: Convert to fraction form
    57,378/84,183 = 84,183/x
  3. Step 3: Cross multiply
    57,378x = 84,183 × 84,183
  4. Step 4: Simplify right side
    57,378x = 7,086,777,489
  5. Step 5: Solve for x
    x = 7,086,777,489/57,378
  6. Step 6: Final answer
    x = 123,510.36

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.