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Finding the Fourth Proportional to 41,982.74, 57,936.57 and 23,120

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Solution

The fourth proportional to 41,982.74, 57,936.57 and 23,120 is: 31,905.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,982.74 : 57,936.57 = 23,120 : x
  2. Step 2: Convert to fraction form
    41,982.74/57,936.57 = 23,120/x
  3. Step 3: Cross multiply
    41,982.74x = 57,936.57 × 23,120
  4. Step 4: Simplify right side
    41,982.74x = 1,339,493,498.40
  5. Step 5: Solve for x
    x = 1,339,493,498.40/41,982.74
  6. Step 6: Final answer
    x = 31,905.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.