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Finding the Third Proportional to 20,112.75 and 31,896

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Solution

The third proportional to 20,112.75 and 31,896 is: 50,582.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.75 : 31,896 = 31,896 : x
  2. Step 2: Convert to fraction form
    20,112.75/31,896 = 31,896/x
  3. Step 3: Cross multiply
    20,112.75x = 31,896 × 31,896
  4. Step 4: Simplify right side
    20,112.75x = 1,017,354,816
  5. Step 5: Solve for x
    x = 1,017,354,816/20,112.75
  6. Step 6: Final answer
    x = 50,582.58

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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.