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Finding the Fourth Proportional to 66,626.28, 91,943.16 and 36,410.97

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Solution

The fourth proportional to 66,626.28, 91,943.16 and 36,410.97 is: 50,246.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,626.28 : 91,943.16 = 36,410.97 : x
  2. Step 2: Convert to fraction form
    66,626.28/91,943.16 = 36,410.97/x
  3. Step 3: Cross multiply
    66,626.28x = 91,943.16 × 36,410.97
  4. Step 4: Simplify right side
    66,626.28x = 3,347,739,640.47
  5. Step 5: Solve for x
    x = 3,347,739,640.47/66,626.28
  6. Step 6: Final answer
    x = 50,246.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.