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Finding the Fourth Proportional to 573,043.47, 859,593.76 and 218,085

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Solution

The fourth proportional to 573,043.47, 859,593.76 and 218,085 is: 327,138.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,043.47 : 859,593.76 = 218,085 : x
  2. Step 2: Convert to fraction form
    573,043.47/859,593.76 = 218,085/x
  3. Step 3: Cross multiply
    573,043.47x = 859,593.76 × 218,085
  4. Step 4: Simplify right side
    573,043.47x = 187,464,504,604.39
  5. Step 5: Solve for x
    x = 187,464,504,604.39/573,043.47
  6. Step 6: Final answer
    x = 327,138.37

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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.