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Finding the Third Proportional to 31,380.75 and 49,896

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Solution

The third proportional to 31,380.75 and 49,896 is: 79,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.75 : 49,896 = 49,896 : x
  2. Step 2: Convert to fraction form
    31,380.75/49,896 = 49,896/x
  3. Step 3: Cross multiply
    31,380.75x = 49,896 × 49,896
  4. Step 4: Simplify right side
    31,380.75x = 2,489,610,816
  5. Step 5: Solve for x
    x = 2,489,610,816/31,380.75
  6. Step 6: Final answer
    x = 79,335.61

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.