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Finding the Fourth Proportional to 185,859.54, 278,610.75 and 119,112.66

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Solution

The fourth proportional to 185,859.54, 278,610.75 and 119,112.66 is: 178,554.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,859.54 : 278,610.75 = 119,112.66 : x
  2. Step 2: Convert to fraction form
    185,859.54/278,610.75 = 119,112.66/x
  3. Step 3: Cross multiply
    185,859.54x = 278,610.75 × 119,112.66
  4. Step 4: Simplify right side
    185,859.54x = 33,186,067,537.10
  5. Step 5: Solve for x
    x = 33,186,067,537.10/185,859.54
  6. Step 6: Final answer
    x = 178,554.56

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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.