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Finding the Fourth Proportional to 113,791.78, 170,682.81 and 38,918.62

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Solution

The fourth proportional to 113,791.78, 170,682.81 and 38,918.62 is: 58,376.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,791.78 : 170,682.81 = 38,918.62 : x
  2. Step 2: Convert to fraction form
    113,791.78/170,682.81 = 38,918.62/x
  3. Step 3: Cross multiply
    113,791.78x = 170,682.81 × 38,918.62
  4. Step 4: Simplify right side
    113,791.78x = 6,642,739,422.92
  5. Step 5: Solve for x
    x = 6,642,739,422.92/113,791.78
  6. Step 6: Final answer
    x = 58,376.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.