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Finding the Fourth Proportional to 433,390.73, 649,836.11 and 133,791.17

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Solution

The fourth proportional to 433,390.73, 649,836.11 and 133,791.17 is: 200,609.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,390.73 : 649,836.11 = 133,791.17 : x
  2. Step 2: Convert to fraction form
    433,390.73/649,836.11 = 133,791.17/x
  3. Step 3: Cross multiply
    433,390.73x = 649,836.11 × 133,791.17
  4. Step 4: Simplify right side
    433,390.73x = 86,942,333,465.15
  5. Step 5: Solve for x
    x = 86,942,333,465.15/433,390.73
  6. Step 6: Final answer
    x = 200,609.58

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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.