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Finding the Fourth Proportional to 74,410.82, 111,617.13 and 21,821.37

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Solution

The fourth proportional to 74,410.82, 111,617.13 and 21,821.37 is: 32,732.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,410.82 : 111,617.13 = 21,821.37 : x
  2. Step 2: Convert to fraction form
    74,410.82/111,617.13 = 21,821.37/x
  3. Step 3: Cross multiply
    74,410.82x = 111,617.13 × 21,821.37
  4. Step 4: Simplify right side
    74,410.82x = 2,435,638,692.07
  5. Step 5: Solve for x
    x = 2,435,638,692.07/74,410.82
  6. Step 6: Final answer
    x = 32,732.32

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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.