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Finding the Fourth Proportional to 101,992.55, 140,704.43 and 67,967.89

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Solution

The fourth proportional to 101,992.55, 140,704.43 and 67,967.89 is: 93,765.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,992.55 : 140,704.43 = 67,967.89 : x
  2. Step 2: Convert to fraction form
    101,992.55/140,704.43 = 67,967.89/x
  3. Step 3: Cross multiply
    101,992.55x = 140,704.43 × 67,967.89
  4. Step 4: Simplify right side
    101,992.55x = 9,563,383,390.67
  5. Step 5: Solve for x
    x = 9,563,383,390.67/101,992.55
  6. Step 6: Final answer
    x = 93,765.51

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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.