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Finding the Fourth Proportional to 192,789.76, 289,112.82 and 66,394.84

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Solution

The fourth proportional to 192,789.76, 289,112.82 and 66,394.84 is: 99,567.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,789.76 : 289,112.82 = 66,394.84 : x
  2. Step 2: Convert to fraction form
    192,789.76/289,112.82 = 66,394.84/x
  3. Step 3: Cross multiply
    192,789.76x = 289,112.82 × 66,394.84
  4. Step 4: Simplify right side
    192,789.76x = 19,195,599,425.85
  5. Step 5: Solve for x
    x = 19,195,599,425.85/192,789.76
  6. Step 6: Final answer
    x = 99,567.53

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1.5x scale

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.