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Finding the Fourth Proportional to 492,791.10, 739,186.74 and 173,193.85

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Solution

The fourth proportional to 492,791.10, 739,186.74 and 173,193.85 is: 259,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,791.10 : 739,186.74 = 173,193.85 : x
  2. Step 2: Convert to fraction form
    492,791.10/739,186.74 = 173,193.85/x
  3. Step 3: Cross multiply
    492,791.10x = 739,186.74 × 173,193.85
  4. Step 4: Simplify right side
    492,791.10x = 128,022,597,369.55
  5. Step 5: Solve for x
    x = 128,022,597,369.55/492,791.10
  6. Step 6: Final answer
    x = 259,790.81

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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.