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Finding the Fourth Proportional to 422,336.15, 582,356.86 and 269,131.67

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Solution

The fourth proportional to 422,336.15, 582,356.86 and 269,131.67 is: 371,104.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,336.15 : 582,356.86 = 269,131.67 : x
  2. Step 2: Convert to fraction form
    422,336.15/582,356.86 = 269,131.67/x
  3. Step 3: Cross multiply
    422,336.15x = 582,356.86 × 269,131.67
  4. Step 4: Simplify right side
    422,336.15x = 156,730,671,355.97
  5. Step 5: Solve for x
    x = 156,730,671,355.97/422,336.15
  6. Step 6: Final answer
    x = 371,104.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.