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Finding the Fourth Proportional to 73,710.66, 101,720.74 and 41,879.60

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Solution

The fourth proportional to 73,710.66, 101,720.74 and 41,879.60 is: 57,793.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,710.66 : 101,720.74 = 41,879.60 : x
  2. Step 2: Convert to fraction form
    73,710.66/101,720.74 = 41,879.60/x
  3. Step 3: Cross multiply
    73,710.66x = 101,720.74 × 41,879.60
  4. Step 4: Simplify right side
    73,710.66x = 4,260,023,902.90
  5. Step 5: Solve for x
    x = 4,260,023,902.90/73,710.66
  6. Step 6: Final answer
    x = 57,793.86

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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.