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Finding the Fourth Proportional to 173,843.10, 260,861.85 and 73,986.30

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Solution

The fourth proportional to 173,843.10, 260,861.85 and 73,986.30 is: 111,020.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,843.10 : 260,861.85 = 73,986.30 : x
  2. Step 2: Convert to fraction form
    173,843.10/260,861.85 = 73,986.30/x
  3. Step 3: Cross multiply
    173,843.10x = 260,861.85 × 73,986.30
  4. Step 4: Simplify right side
    173,843.10x = 19,300,203,092.66
  5. Step 5: Solve for x
    x = 19,300,203,092.66/173,843.10
  6. Step 6: Final answer
    x = 111,020.82

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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.