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Finding the Fourth Proportional to 192,765.22, 289,167.19 and 66,388.82

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Solution

The fourth proportional to 192,765.22, 289,167.19 and 66,388.82 is: 99,589.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,765.22 : 289,167.19 = 66,388.82 : x
  2. Step 2: Convert to fraction form
    192,765.22/289,167.19 = 66,388.82/x
  3. Step 3: Cross multiply
    192,765.22x = 289,167.19 × 66,388.82
  4. Step 4: Simplify right side
    192,765.22x = 19,197,467,101.73
  5. Step 5: Solve for x
    x = 19,197,467,101.73/192,765.22
  6. Step 6: Final answer
    x = 99,589.89

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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.