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Finding the Fourth Proportional to 38,662.52, 58,016.08 and 20,893.22

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Solution

The fourth proportional to 38,662.52, 58,016.08 and 20,893.22 is: 31,351.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,662.52 : 58,016.08 = 20,893.22 : x
  2. Step 2: Convert to fraction form
    38,662.52/58,016.08 = 20,893.22/x
  3. Step 3: Cross multiply
    38,662.52x = 58,016.08 × 20,893.22
  4. Step 4: Simplify right side
    38,662.52x = 1,212,142,722.98
  5. Step 5: Solve for x
    x = 1,212,142,722.98/38,662.52
  6. Step 6: Final answer
    x = 31,351.88

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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.