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Finding the Fourth Proportional to 66,296.11, 91,485.87 and 36,081.49

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Solution

The fourth proportional to 66,296.11, 91,485.87 and 36,081.49 is: 49,790.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,296.11 : 91,485.87 = 36,081.49 : x
  2. Step 2: Convert to fraction form
    66,296.11/91,485.87 = 36,081.49/x
  3. Step 3: Cross multiply
    66,296.11x = 91,485.87 × 36,081.49
  4. Step 4: Simplify right side
    66,296.11x = 3,300,946,046.12
  5. Step 5: Solve for x
    x = 3,300,946,046.12/66,296.11
  6. Step 6: Final answer
    x = 49,790.95

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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.