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Finding the Fourth Proportional to 353,640.80, 530,589.09 and 218,546.75

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Solution

The fourth proportional to 353,640.80, 530,589.09 and 218,546.75 is: 327,899.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,640.80 : 530,589.09 = 218,546.75 : x
  2. Step 2: Convert to fraction form
    353,640.80/530,589.09 = 218,546.75/x
  3. Step 3: Cross multiply
    353,640.80x = 530,589.09 × 218,546.75
  4. Step 4: Simplify right side
    353,640.80x = 115,958,521,204.96
  5. Step 5: Solve for x
    x = 115,958,521,204.96/353,640.80
  6. Step 6: Final answer
    x = 327,899.16

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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.