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Finding the Fourth Proportional to 519,110.40, 778,811.40 and 252,879.60

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Solution

The fourth proportional to 519,110.40, 778,811.40 and 252,879.60 is: 379,390.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,110.40 : 778,811.40 = 252,879.60 : x
  2. Step 2: Convert to fraction form
    519,110.40/778,811.40 = 252,879.60/x
  3. Step 3: Cross multiply
    519,110.40x = 778,811.40 × 252,879.60
  4. Step 4: Simplify right side
    519,110.40x = 196,945,515,307.44
  5. Step 5: Solve for x
    x = 196,945,515,307.44/519,110.40
  6. Step 6: Final answer
    x = 379,390.43

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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.