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Finding the Fourth Proportional to 193,855.56, 267,515.76 and 108,978.12

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Solution

The fourth proportional to 193,855.56, 267,515.76 and 108,978.12 is: 150,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,855.56 : 267,515.76 = 108,978.12 : x
  2. Step 2: Convert to fraction form
    193,855.56/267,515.76 = 108,978.12/x
  3. Step 3: Cross multiply
    193,855.56x = 267,515.76 × 108,978.12
  4. Step 4: Simplify right side
    193,855.56x = 29,153,364,595.17
  5. Step 5: Solve for x
    x = 29,153,364,595.17/193,855.56
  6. Step 6: Final answer
    x = 150,387.04

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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.