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Finding the Fourth Proportional to 133,998.57, 200,736.54 and 74,655.54

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Solution

The fourth proportional to 133,998.57, 200,736.54 and 74,655.54 is: 111,837.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,998.57 : 200,736.54 = 74,655.54 : x
  2. Step 2: Convert to fraction form
    133,998.57/200,736.54 = 74,655.54/x
  3. Step 3: Cross multiply
    133,998.57x = 200,736.54 × 74,655.54
  4. Step 4: Simplify right side
    133,998.57x = 14,986,094,791.43
  5. Step 5: Solve for x
    x = 14,986,094,791.43/133,998.57
  6. Step 6: Final answer
    x = 111,837.72

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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.