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Finding the Fourth Proportional to 92,129.54, 138,092.85 and 35,959.28

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Solution

The fourth proportional to 92,129.54, 138,092.85 and 35,959.28 is: 53,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,129.54 : 138,092.85 = 35,959.28 : x
  2. Step 2: Convert to fraction form
    92,129.54/138,092.85 = 35,959.28/x
  3. Step 3: Cross multiply
    92,129.54x = 138,092.85 × 35,959.28
  4. Step 4: Simplify right side
    92,129.54x = 4,965,718,768.68
  5. Step 5: Solve for x
    x = 4,965,718,768.68/92,129.54
  6. Step 6: Final answer
    x = 53,899.31

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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.