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Finding the Fourth Proportional to 68,665.92, 94,745.28 and 41,790.42

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Solution

The fourth proportional to 68,665.92, 94,745.28 and 41,790.42 is: 57,662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,665.92 : 94,745.28 = 41,790.42 : x
  2. Step 2: Convert to fraction form
    68,665.92/94,745.28 = 41,790.42/x
  3. Step 3: Cross multiply
    68,665.92x = 94,745.28 × 41,790.42
  4. Step 4: Simplify right side
    68,665.92x = 3,959,445,044.22
  5. Step 5: Solve for x
    x = 3,959,445,044.22/68,665.92
  6. Step 6: Final answer
    x = 57,662.45

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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.