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Finding the Fourth Proportional to 74,393.78, 111,399.92 and 41,076.86

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Solution

The fourth proportional to 74,393.78, 111,399.92 and 41,076.86 is: 61,509.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,393.78 : 111,399.92 = 41,076.86 : x
  2. Step 2: Convert to fraction form
    74,393.78/111,399.92 = 41,076.86/x
  3. Step 3: Cross multiply
    74,393.78x = 111,399.92 × 41,076.86
  4. Step 4: Simplify right side
    74,393.78x = 4,575,958,990.97
  5. Step 5: Solve for x
    x = 4,575,958,990.97/74,393.78
  6. Step 6: Final answer
    x = 61,509.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.