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Finding the Fourth Proportional to 66,469.83, 91,729.45 and 36,255.15

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Solution

The fourth proportional to 66,469.83, 91,729.45 and 36,255.15 is: 50,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,469.83 : 91,729.45 = 36,255.15 : x
  2. Step 2: Convert to fraction form
    66,469.83/91,729.45 = 36,255.15/x
  3. Step 3: Cross multiply
    66,469.83x = 91,729.45 × 36,255.15
  4. Step 4: Simplify right side
    66,469.83x = 3,325,664,969.17
  5. Step 5: Solve for x
    x = 3,325,664,969.17/66,469.83
  6. Step 6: Final answer
    x = 50,032.70

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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.