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Finding the Fourth Proportional to 66,178.22, 91,326.69 and 35,963.60

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Solution

The fourth proportional to 66,178.22, 91,326.69 and 35,963.60 is: 49,630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,178.22 : 91,326.69 = 35,963.60 : x
  2. Step 2: Convert to fraction form
    66,178.22/91,326.69 = 35,963.60/x
  3. Step 3: Cross multiply
    66,178.22x = 91,326.69 × 35,963.60
  4. Step 4: Simplify right side
    66,178.22x = 3,284,436,091.85
  5. Step 5: Solve for x
    x = 3,284,436,091.85/66,178.22
  6. Step 6: Final answer
    x = 49,630.17

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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.