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Finding the Fourth Proportional to 628,180.50, 866,889.50 and 356,161.44

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Solution

The fourth proportional to 628,180.50, 866,889.50 and 356,161.44 is: 491,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,180.50 : 866,889.50 = 356,161.44 : x
  2. Step 2: Convert to fraction form
    628,180.50/866,889.50 = 356,161.44/x
  3. Step 3: Cross multiply
    628,180.50x = 866,889.50 × 356,161.44
  4. Step 4: Simplify right side
    628,180.50x = 308,752,612,640.88
  5. Step 5: Solve for x
    x = 308,752,612,640.88/628,180.50
  6. Step 6: Final answer
    x = 491,503.02

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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.