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Finding the Fourth Proportional to 202,940.49, 304,412.79 and 90,626.43

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Solution

The fourth proportional to 202,940.49, 304,412.79 and 90,626.43 is: 135,940.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,940.49 : 304,412.79 = 90,626.43 : x
  2. Step 2: Convert to fraction form
    202,940.49/304,412.79 = 90,626.43/x
  3. Step 3: Cross multiply
    202,940.49x = 304,412.79 × 90,626.43
  4. Step 4: Simplify right side
    202,940.49x = 27,587,844,404.04
  5. Step 5: Solve for x
    x = 27,587,844,404.04/202,940.49
  6. Step 6: Final answer
    x = 135,940.56

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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.