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Finding the Fourth Proportional to 192,770.67, 289,109.43 and 74,366.49

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Solution

The fourth proportional to 192,770.67, 289,109.43 and 74,366.49 is: 111,531.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,770.67 : 289,109.43 = 74,366.49 : x
  2. Step 2: Convert to fraction form
    192,770.67/289,109.43 = 74,366.49/x
  3. Step 3: Cross multiply
    192,770.67x = 289,109.43 × 74,366.49
  4. Step 4: Simplify right side
    192,770.67x = 21,500,053,535.00
  5. Step 5: Solve for x
    x = 21,500,053,535.00/192,770.67
  6. Step 6: Final answer
    x = 111,531.77

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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.