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Finding the Fourth Proportional to 38,892.56, 57,969.52 and 36,678.56

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Solution

The fourth proportional to 38,892.56, 57,969.52 and 36,678.56 is: 54,669.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,892.56 : 57,969.52 = 36,678.56 : x
  2. Step 2: Convert to fraction form
    38,892.56/57,969.52 = 36,678.56/x
  3. Step 3: Cross multiply
    38,892.56x = 57,969.52 × 36,678.56
  4. Step 4: Simplify right side
    38,892.56x = 2,126,238,517.49
  5. Step 5: Solve for x
    x = 2,126,238,517.49/38,892.56
  6. Step 6: Final answer
    x = 54,669.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.