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Finding the Fourth Proportional to 394,418.85, 591,628.28 and 244,171.95

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Solution

The fourth proportional to 394,418.85, 591,628.28 and 244,171.95 is: 366,257.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,418.85 : 591,628.28 = 244,171.95 : x
  2. Step 2: Convert to fraction form
    394,418.85/591,628.28 = 244,171.95/x
  3. Step 3: Cross multiply
    394,418.85x = 591,628.28 × 244,171.95
  4. Step 4: Simplify right side
    394,418.85x = 144,459,029,581.89
  5. Step 5: Solve for x
    x = 144,459,029,581.89/394,418.85
  6. Step 6: Final answer
    x = 366,257.93

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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.