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Finding the Fourth Proportional to 220,640.94, 330,965.06 and 106,722.54

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Solution

The fourth proportional to 220,640.94, 330,965.06 and 106,722.54 is: 160,085.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,640.94 : 330,965.06 = 106,722.54 : x
  2. Step 2: Convert to fraction form
    220,640.94/330,965.06 = 106,722.54/x
  3. Step 3: Cross multiply
    220,640.94x = 330,965.06 × 106,722.54
  4. Step 4: Simplify right side
    220,640.94x = 35,321,431,320.84
  5. Step 5: Solve for x
    x = 35,321,431,320.84/220,640.94
  6. Step 6: Final answer
    x = 160,085.57

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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.