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Finding the Fourth Proportional to 188,837.92, 260,640.66 and 108,263.98

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Solution

The fourth proportional to 188,837.92, 260,640.66 and 108,263.98 is: 149,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,837.92 : 260,640.66 = 108,263.98 : x
  2. Step 2: Convert to fraction form
    188,837.92/260,640.66 = 108,263.98/x
  3. Step 3: Cross multiply
    188,837.92x = 260,640.66 × 108,263.98
  4. Step 4: Simplify right side
    188,837.92x = 28,217,995,201.43
  5. Step 5: Solve for x
    x = 28,217,995,201.43/188,837.92
  6. Step 6: Final answer
    x = 149,429.71

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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.