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Finding the Fourth Proportional to 193,340.85, 290,025.11 and 80,907.86

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Solution

The fourth proportional to 193,340.85, 290,025.11 and 80,907.86 is: 121,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,340.85 : 290,025.11 = 80,907.86 : x
  2. Step 2: Convert to fraction form
    193,340.85/290,025.11 = 80,907.86/x
  3. Step 3: Cross multiply
    193,340.85x = 290,025.11 × 80,907.86
  4. Step 4: Simplify right side
    193,340.85x = 23,465,309,141.70
  5. Step 5: Solve for x
    x = 23,465,309,141.70/193,340.85
  6. Step 6: Final answer
    x = 121,367.57

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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.