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Finding the Fourth Proportional to 188,754.53, 260,518.55 and 108,236.48

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Solution

The fourth proportional to 188,754.53, 260,518.55 and 108,236.48 is: 149,387.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,754.53 : 260,518.55 = 108,236.48 : x
  2. Step 2: Convert to fraction form
    188,754.53/260,518.55 = 108,236.48/x
  3. Step 3: Cross multiply
    188,754.53x = 260,518.55 × 108,236.48
  4. Step 4: Simplify right side
    188,754.53x = 28,197,608,982.93
  5. Step 5: Solve for x
    x = 28,197,608,982.93/188,754.53
  6. Step 6: Final answer
    x = 149,387.72

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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.