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Finding the Fourth Proportional to 73,220.87, 109,731.94 and 33,189.86

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Solution

The fourth proportional to 73,220.87, 109,731.94 and 33,189.86 is: 49,739.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,220.87 : 109,731.94 = 33,189.86 : x
  2. Step 2: Convert to fraction form
    73,220.87/109,731.94 = 33,189.86/x
  3. Step 3: Cross multiply
    73,220.87x = 109,731.94 × 33,189.86
  4. Step 4: Simplify right side
    73,220.87x = 3,641,987,094.49
  5. Step 5: Solve for x
    x = 3,641,987,094.49/73,220.87
  6. Step 6: Final answer
    x = 49,739.74

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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.