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Finding the Fourth Proportional to 69,371.17, 95,721.92 and 42,133.09

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Solution

The fourth proportional to 69,371.17, 95,721.92 and 42,133.09 is: 58,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,371.17 : 95,721.92 = 42,133.09 : x
  2. Step 2: Convert to fraction form
    69,371.17/95,721.92 = 42,133.09/x
  3. Step 3: Cross multiply
    69,371.17x = 95,721.92 × 42,133.09
  4. Step 4: Simplify right side
    69,371.17x = 4,033,059,791.72
  5. Step 5: Solve for x
    x = 4,033,059,791.72/69,371.17
  6. Step 6: Final answer
    x = 58,137.40

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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.