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Finding the Fourth Proportional to 110,081.85, 151,959.47 and 74,320.31

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Solution

The fourth proportional to 110,081.85, 151,959.47 and 74,320.31 is: 102,593.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,081.85 : 151,959.47 = 74,320.31 : x
  2. Step 2: Convert to fraction form
    110,081.85/151,959.47 = 74,320.31/x
  3. Step 3: Cross multiply
    110,081.85x = 151,959.47 × 74,320.31
  4. Step 4: Simplify right side
    110,081.85x = 11,293,673,786.44
  5. Step 5: Solve for x
    x = 11,293,673,786.44/110,081.85
  6. Step 6: Final answer
    x = 102,593.42

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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.