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Finding the Fourth Proportional to 74,694.92, 103,076.37 and 41,988.33

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Solution

The fourth proportional to 74,694.92, 103,076.37 and 41,988.33 is: 57,942.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,694.92 : 103,076.37 = 41,988.33 : x
  2. Step 2: Convert to fraction form
    74,694.92/103,076.37 = 41,988.33/x
  3. Step 3: Cross multiply
    74,694.92x = 103,076.37 × 41,988.33
  4. Step 4: Simplify right side
    74,694.92x = 4,328,005,025.30
  5. Step 5: Solve for x
    x = 4,328,005,025.30/74,694.92
  6. Step 6: Final answer
    x = 57,942.43

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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.