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Finding the Fourth Proportional to 441,163.11, 661,744.79 and 108,739.11

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Solution

The fourth proportional to 441,163.11, 661,744.79 and 108,739.11 is: 163,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,163.11 : 661,744.79 = 108,739.11 : x
  2. Step 2: Convert to fraction form
    441,163.11/661,744.79 = 108,739.11/x
  3. Step 3: Cross multiply
    441,163.11x = 661,744.79 × 108,739.11
  4. Step 4: Simplify right side
    441,163.11x = 71,957,538,968.04
  5. Step 5: Solve for x
    x = 71,957,538,968.04/441,163.11
  6. Step 6: Final answer
    x = 163,108.69

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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.