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Finding the Fourth Proportional to 115,979.69, 173,996.78 and 36,013.56

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Solution

The fourth proportional to 115,979.69, 173,996.78 and 36,013.56 is: 54,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,979.69 : 173,996.78 = 36,013.56 : x
  2. Step 2: Convert to fraction form
    115,979.69/173,996.78 = 36,013.56/x
  3. Step 3: Cross multiply
    115,979.69x = 173,996.78 × 36,013.56
  4. Step 4: Simplify right side
    115,979.69x = 6,266,243,296.27
  5. Step 5: Solve for x
    x = 6,266,243,296.27/115,979.69
  6. Step 6: Final answer
    x = 54,028.80

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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.