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Finding the Fourth Proportional to 74,224.80, 111,741.84 and 67,692.96

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Solution

The fourth proportional to 74,224.80, 111,741.84 and 67,692.96 is: 101,908.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,224.80 : 111,741.84 = 67,692.96 : x
  2. Step 2: Convert to fraction form
    74,224.80/111,741.84 = 67,692.96/x
  3. Step 3: Cross multiply
    74,224.80x = 111,741.84 × 67,692.96
  4. Step 4: Simplify right side
    74,224.80x = 7,564,135,905.45
  5. Step 5: Solve for x
    x = 7,564,135,905.45/74,224.80
  6. Step 6: Final answer
    x = 101,908.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.