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Finding the Fourth Proportional to 67,351.38, 92,938.56 and 39,054

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Solution

The fourth proportional to 67,351.38, 92,938.56 and 39,054 is: 53,890.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,351.38 : 92,938.56 = 39,054 : x
  2. Step 2: Convert to fraction form
    67,351.38/92,938.56 = 39,054/x
  3. Step 3: Cross multiply
    67,351.38x = 92,938.56 × 39,054
  4. Step 4: Simplify right side
    67,351.38x = 3,629,622,522.24
  5. Step 5: Solve for x
    x = 3,629,622,522.24/67,351.38
  6. Step 6: Final answer
    x = 53,890.84

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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.