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Finding the Fourth Proportional to 84,466.40, 115,942.64 and 74,692.04

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Solution

The fourth proportional to 84,466.40, 115,942.64 and 74,692.04 is: 102,525.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,466.40 : 115,942.64 = 74,692.04 : x
  2. Step 2: Convert to fraction form
    84,466.40/115,942.64 = 74,692.04/x
  3. Step 3: Cross multiply
    84,466.40x = 115,942.64 × 74,692.04
  4. Step 4: Simplify right side
    84,466.40x = 8,659,991,351.41
  5. Step 5: Solve for x
    x = 8,659,991,351.41/84,466.40
  6. Step 6: Final answer
    x = 102,525.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.