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Finding the Fourth Proportional to 217,735.53, 326,623.83 and 84,625.98

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Solution

The fourth proportional to 217,735.53, 326,623.83 and 84,625.98 is: 126,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,735.53 : 326,623.83 = 84,625.98 : x
  2. Step 2: Convert to fraction form
    217,735.53/326,623.83 = 84,625.98/x
  3. Step 3: Cross multiply
    217,735.53x = 326,623.83 × 84,625.98
  4. Step 4: Simplify right side
    217,735.53x = 27,640,861,705.10
  5. Step 5: Solve for x
    x = 27,640,861,705.10/217,735.53
  6. Step 6: Final answer
    x = 126,946.95

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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.