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Finding the Fourth Proportional to 134,791.75, 186,012.62 and 75,175.75

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Solution

The fourth proportional to 134,791.75, 186,012.62 and 75,175.75 is: 103,742.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,791.75 : 186,012.62 = 75,175.75 : x
  2. Step 2: Convert to fraction form
    134,791.75/186,012.62 = 75,175.75/x
  3. Step 3: Cross multiply
    134,791.75x = 186,012.62 × 75,175.75
  4. Step 4: Simplify right side
    134,791.75x = 13,983,638,217.97
  5. Step 5: Solve for x
    x = 13,983,638,217.97/134,791.75
  6. Step 6: Final answer
    x = 103,742.54

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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.