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Finding the Fourth Proportional to 91,795.44, 137,425.72 and 68,207.54

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Solution

The fourth proportional to 91,795.44, 137,425.72 and 68,207.54 is: 102,112.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,795.44 : 137,425.72 = 68,207.54 : x
  2. Step 2: Convert to fraction form
    91,795.44/137,425.72 = 68,207.54/x
  3. Step 3: Cross multiply
    91,795.44x = 137,425.72 × 68,207.54
  4. Step 4: Simplify right side
    91,795.44x = 9,373,470,293.93
  5. Step 5: Solve for x
    x = 9,373,470,293.93/91,795.44
  6. Step 6: Final answer
    x = 102,112.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.