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Finding the Fourth Proportional to 72,909.56, 100,608 and 41,084.12

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Solution

The fourth proportional to 72,909.56, 100,608 and 41,084.12 is: 56,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,909.56 : 100,608 = 41,084.12 : x
  2. Step 2: Convert to fraction form
    72,909.56/100,608 = 41,084.12/x
  3. Step 3: Cross multiply
    72,909.56x = 100,608 × 41,084.12
  4. Step 4: Simplify right side
    72,909.56x = 4,133,391,144.96
  5. Step 5: Solve for x
    x = 4,133,391,144.96/72,909.56
  6. Step 6: Final answer
    x = 56,692.03

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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.