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Finding the Fourth Proportional to 192,928.79, 289,491.99 and 91,841.25

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Solution

The fourth proportional to 192,928.79, 289,491.99 and 91,841.25 is: 137,808.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,928.79 : 289,491.99 = 91,841.25 : x
  2. Step 2: Convert to fraction form
    192,928.79/289,491.99 = 91,841.25/x
  3. Step 3: Cross multiply
    192,928.79x = 289,491.99 × 91,841.25
  4. Step 4: Simplify right side
    192,928.79x = 26,587,305,767.38
  5. Step 5: Solve for x
    x = 26,587,305,767.38/192,928.79
  6. Step 6: Final answer
    x = 137,808.91

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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.