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Finding the Fourth Proportional to 66,634.79, 91,961.49 and 37,963.42

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Solution

The fourth proportional to 66,634.79, 91,961.49 and 37,963.42 is: 52,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,634.79 : 91,961.49 = 37,963.42 : x
  2. Step 2: Convert to fraction form
    66,634.79/91,961.49 = 37,963.42/x
  3. Step 3: Cross multiply
    66,634.79x = 91,961.49 × 37,963.42
  4. Step 4: Simplify right side
    66,634.79x = 3,491,172,581.15
  5. Step 5: Solve for x
    x = 3,491,172,581.15/66,634.79
  6. Step 6: Final answer
    x = 52,392.64

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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.