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Finding the Fourth Proportional to 66,224.73, 91,388.82 and 36,009.79

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Solution

The fourth proportional to 66,224.73, 91,388.82 and 36,009.79 is: 49,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,224.73 : 91,388.82 = 36,009.79 : x
  2. Step 2: Convert to fraction form
    66,224.73/91,388.82 = 36,009.79/x
  3. Step 3: Cross multiply
    66,224.73x = 91,388.82 × 36,009.79
  4. Step 4: Simplify right side
    66,224.73x = 3,290,892,216.55
  5. Step 5: Solve for x
    x = 3,290,892,216.55/66,224.73
  6. Step 6: Final answer
    x = 49,692.80

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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.