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Finding the Fourth Proportional to 66,042.28, 91,138.04 and 35,827.62

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Solution

The fourth proportional to 66,042.28, 91,138.04 and 35,827.62 is: 49,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.28 : 91,138.04 = 35,827.62 : x
  2. Step 2: Convert to fraction form
    66,042.28/91,138.04 = 35,827.62/x
  3. Step 3: Cross multiply
    66,042.28x = 91,138.04 × 35,827.62
  4. Step 4: Simplify right side
    66,042.28x = 3,265,259,064.66
  5. Step 5: Solve for x
    x = 3,265,259,064.66/66,042.28
  6. Step 6: Final answer
    x = 49,441.95

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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.