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Finding the Fourth Proportional to 392,592.80, 588,889.20 and 259,623.20

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Solution

The fourth proportional to 392,592.80, 588,889.20 and 259,623.20 is: 389,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,592.80 : 588,889.20 = 259,623.20 : x
  2. Step 2: Convert to fraction form
    392,592.80/588,889.20 = 259,623.20/x
  3. Step 3: Cross multiply
    392,592.80x = 588,889.20 × 259,623.20
  4. Step 4: Simplify right side
    392,592.80x = 152,889,298,549.44
  5. Step 5: Solve for x
    x = 152,889,298,549.44/392,592.80
  6. Step 6: Final answer
    x = 389,434.80

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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.