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Finding the Fourth Proportional to 66,662.46, 92,017.36 and 38,379.42

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Solution

The fourth proportional to 66,662.46, 92,017.36 and 38,379.42 is: 52,976.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,662.46 : 92,017.36 = 38,379.42 : x
  2. Step 2: Convert to fraction form
    66,662.46/92,017.36 = 38,379.42/x
  3. Step 3: Cross multiply
    66,662.46x = 92,017.36 × 38,379.42
  4. Step 4: Simplify right side
    66,662.46x = 3,531,572,906.73
  5. Step 5: Solve for x
    x = 3,531,572,906.73/66,662.46
  6. Step 6: Final answer
    x = 52,976.94

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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.