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Finding the Fourth Proportional to 188,930.58, 260,721.05 and 104,055.54

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Solution

The fourth proportional to 188,930.58, 260,721.05 and 104,055.54 is: 143,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,930.58 : 260,721.05 = 104,055.54 : x
  2. Step 2: Convert to fraction form
    188,930.58/260,721.05 = 104,055.54/x
  3. Step 3: Cross multiply
    188,930.58x = 260,721.05 × 104,055.54
  4. Step 4: Simplify right side
    188,930.58x = 27,129,469,647.12
  5. Step 5: Solve for x
    x = 27,129,469,647.12/188,930.58
  6. Step 6: Final answer
    x = 143,594.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.