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Finding the Fourth Proportional to 386,993.70, 580,267.07 and 150,059.59

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Solution

The fourth proportional to 386,993.70, 580,267.07 and 150,059.59 is: 225,002.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,993.70 : 580,267.07 = 150,059.59 : x
  2. Step 2: Convert to fraction form
    386,993.70/580,267.07 = 150,059.59/x
  3. Step 3: Cross multiply
    386,993.70x = 580,267.07 × 150,059.59
  4. Step 4: Simplify right side
    386,993.70x = 87,074,638,614.70
  5. Step 5: Solve for x
    x = 87,074,638,614.70/386,993.70
  6. Step 6: Final answer
    x = 225,002.73

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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.