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Finding the Fourth Proportional to 188,974.25, 260,775.83 and 108,396.71

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Solution

The fourth proportional to 188,974.25, 260,775.83 and 108,396.71 is: 149,582.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,974.25 : 260,775.83 = 108,396.71 : x
  2. Step 2: Convert to fraction form
    188,974.25/260,775.83 = 108,396.71/x
  3. Step 3: Cross multiply
    188,974.25x = 260,775.83 × 108,396.71
  4. Step 4: Simplify right side
    188,974.25x = 28,267,241,477.54
  5. Step 5: Solve for x
    x = 28,267,241,477.54/188,974.25
  6. Step 6: Final answer
    x = 149,582.50

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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.