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Finding the Fourth Proportional to 392,546.88, 541,785.60 and 231,392.64

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Solution

The fourth proportional to 392,546.88, 541,785.60 and 231,392.64 is: 319,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,546.88 : 541,785.60 = 231,392.64 : x
  2. Step 2: Convert to fraction form
    392,546.88/541,785.60 = 231,392.64/x
  3. Step 3: Cross multiply
    392,546.88x = 541,785.60 × 231,392.64
  4. Step 4: Simplify right side
    392,546.88x = 125,365,200,297.98
  5. Step 5: Solve for x
    x = 125,365,200,297.98/392,546.88
  6. Step 6: Final answer
    x = 319,363.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.