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Finding the Fourth Proportional to 217,732.92, 326,599.40 and 67,986.03

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Solution

The fourth proportional to 217,732.92, 326,599.40 and 67,986.03 is: 101,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,732.92 : 326,599.40 = 67,986.03 : x
  2. Step 2: Convert to fraction form
    217,732.92/326,599.40 = 67,986.03/x
  3. Step 3: Cross multiply
    217,732.92x = 326,599.40 × 67,986.03
  4. Step 4: Simplify right side
    217,732.92x = 22,204,196,606.38
  5. Step 5: Solve for x
    x = 22,204,196,606.38/217,732.92
  6. Step 6: Final answer
    x = 101,979.05

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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.