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Finding the Fourth Proportional to 158,791.75, 238,249.73 and 69,982.81

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Solution

The fourth proportional to 158,791.75, 238,249.73 and 69,982.81 is: 105,001.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,791.75 : 238,249.73 = 69,982.81 : x
  2. Step 2: Convert to fraction form
    158,791.75/238,249.73 = 69,982.81/x
  3. Step 3: Cross multiply
    158,791.75x = 238,249.73 × 69,982.81
  4. Step 4: Simplify right side
    158,791.75x = 16,673,385,587.14
  5. Step 5: Solve for x
    x = 16,673,385,587.14/158,791.75
  6. Step 6: Final answer
    x = 105,001.59

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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.