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Finding the Fourth Proportional to 65,912.52, 90,965.79 and 37,622.46

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Solution

The fourth proportional to 65,912.52, 90,965.79 and 37,622.46 is: 51,922.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,912.52 : 90,965.79 = 37,622.46 : x
  2. Step 2: Convert to fraction form
    65,912.52/90,965.79 = 37,622.46/x
  3. Step 3: Cross multiply
    65,912.52x = 90,965.79 × 37,622.46
  4. Step 4: Simplify right side
    65,912.52x = 3,422,356,795.64
  5. Step 5: Solve for x
    x = 3,422,356,795.64/65,912.52
  6. Step 6: Final answer
    x = 51,922.71

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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.