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Finding the Fourth Proportional to 192,558.62, 288,979.81 and 91,357.04

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Solution

The fourth proportional to 192,558.62, 288,979.81 and 91,357.04 is: 137,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,558.62 : 288,979.81 = 91,357.04 : x
  2. Step 2: Convert to fraction form
    192,558.62/288,979.81 = 91,357.04/x
  3. Step 3: Cross multiply
    192,558.62x = 288,979.81 × 91,357.04
  4. Step 4: Simplify right side
    192,558.62x = 26,400,340,061.36
  5. Step 5: Solve for x
    x = 26,400,340,061.36/192,558.62
  6. Step 6: Final answer
    x = 137,102.87

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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.