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Finding the Fourth Proportional to 73,974.56, 110,945.60 and 21,372.60

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Solution

The fourth proportional to 73,974.56, 110,945.60 and 21,372.60 is: 32,054.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,974.56 : 110,945.60 = 21,372.60 : x
  2. Step 2: Convert to fraction form
    73,974.56/110,945.60 = 21,372.60/x
  3. Step 3: Cross multiply
    73,974.56x = 110,945.60 × 21,372.60
  4. Step 4: Simplify right side
    73,974.56x = 2,371,195,930.56
  5. Step 5: Solve for x
    x = 2,371,195,930.56/73,974.56
  6. Step 6: Final answer
    x = 32,054.21

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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.