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Finding the Fourth Proportional to 515,850.05, 773,422.11 and 262,640.54

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Solution

The fourth proportional to 515,850.05, 773,422.11 and 262,640.54 is: 393,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,850.05 : 773,422.11 = 262,640.54 : x
  2. Step 2: Convert to fraction form
    515,850.05/773,422.11 = 262,640.54/x
  3. Step 3: Cross multiply
    515,850.05x = 773,422.11 × 262,640.54
  4. Step 4: Simplify right side
    515,850.05x = 203,131,996,751.23
  5. Step 5: Solve for x
    x = 203,131,996,751.23/515,850.05
  6. Step 6: Final answer
    x = 393,781.10

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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.