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Finding the Fourth Proportional to 393,321.56, 590,571.20 and 225,031.64

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Solution

The fourth proportional to 393,321.56, 590,571.20 and 225,031.64 is: 337,884.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,321.56 : 590,571.20 = 225,031.64 : x
  2. Step 2: Convert to fraction form
    393,321.56/590,571.20 = 225,031.64/x
  3. Step 3: Cross multiply
    393,321.56x = 590,571.20 × 225,031.64
  4. Step 4: Simplify right side
    393,321.56x = 132,897,203,282.49
  5. Step 5: Solve for x
    x = 132,897,203,282.49/393,321.56
  6. Step 6: Final answer
    x = 337,884.36

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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.