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Finding the Fourth Proportional to 573,190.30, 859,793.62 and 218,223.80

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Solution

The fourth proportional to 573,190.30, 859,793.62 and 218,223.80 is: 327,338.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,190.30 : 859,793.62 = 218,223.80 : x
  2. Step 2: Convert to fraction form
    573,190.30/859,793.62 = 218,223.80/x
  3. Step 3: Cross multiply
    573,190.30x = 859,793.62 × 218,223.80
  4. Step 4: Simplify right side
    573,190.30x = 187,627,430,972.16
  5. Step 5: Solve for x
    x = 187,627,430,972.16/573,190.30
  6. Step 6: Final answer
    x = 327,338.81

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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.