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Finding the Fourth Proportional to 515,993.79, 773,406.73 and 262,739.30

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Solution

The fourth proportional to 515,993.79, 773,406.73 and 262,739.30 is: 393,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,993.79 : 773,406.73 = 262,739.30 : x
  2. Step 2: Convert to fraction form
    515,993.79/773,406.73 = 262,739.30/x
  3. Step 3: Cross multiply
    515,993.79x = 773,406.73 × 262,739.30
  4. Step 4: Simplify right side
    515,993.79x = 203,204,339,316.88
  5. Step 5: Solve for x
    x = 203,204,339,316.88/515,993.79
  6. Step 6: Final answer
    x = 393,811.60

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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.