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Finding the Fourth Proportional to 188,981.76, 260,794.82 and 104,100.64

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Solution

The fourth proportional to 188,981.76, 260,794.82 and 104,100.64 is: 143,658.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,981.76 : 260,794.82 = 104,100.64 : x
  2. Step 2: Convert to fraction form
    188,981.76/260,794.82 = 104,100.64/x
  3. Step 3: Cross multiply
    188,981.76x = 260,794.82 × 104,100.64
  4. Step 4: Simplify right side
    188,981.76x = 27,148,907,670.68
  5. Step 5: Solve for x
    x = 27,148,907,670.68/188,981.76
  6. Step 6: Final answer
    x = 143,658.88

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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.