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Finding the Fourth Proportional to 193,438.52, 266,945.30 and 108,555.57

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Solution

The fourth proportional to 193,438.52, 266,945.30 and 108,555.57 is: 149,806.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,438.52 : 266,945.30 = 108,555.57 : x
  2. Step 2: Convert to fraction form
    193,438.52/266,945.30 = 108,555.57/x
  3. Step 3: Cross multiply
    193,438.52x = 266,945.30 × 108,555.57
  4. Step 4: Simplify right side
    193,438.52x = 28,978,398,657.54
  5. Step 5: Solve for x
    x = 28,978,398,657.54/193,438.52
  6. Step 6: Final answer
    x = 149,806.77

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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.