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Finding the Fourth Proportional to 66,640.78, 91,963.65 and 37,566.51

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Solution

The fourth proportional to 66,640.78, 91,963.65 and 37,566.51 is: 51,841.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640.78 : 91,963.65 = 37,566.51 : x
  2. Step 2: Convert to fraction form
    66,640.78/91,963.65 = 37,566.51/x
  3. Step 3: Cross multiply
    66,640.78x = 91,963.65 × 37,566.51
  4. Step 4: Simplify right side
    66,640.78x = 3,454,753,377.36
  5. Step 5: Solve for x
    x = 3,454,753,377.36/66,640.78
  6. Step 6: Final answer
    x = 51,841.43

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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.