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Finding the Fourth Proportional to 54,353.96, 74,976.69 and 34,178.90

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Solution

The fourth proportional to 54,353.96, 74,976.69 and 34,178.90 is: 47,146.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,353.96 : 74,976.69 = 34,178.90 : x
  2. Step 2: Convert to fraction form
    54,353.96/74,976.69 = 34,178.90/x
  3. Step 3: Cross multiply
    54,353.96x = 74,976.69 × 34,178.90
  4. Step 4: Simplify right side
    54,353.96x = 2,562,620,789.84
  5. Step 5: Solve for x
    x = 2,562,620,789.84/54,353.96
  6. Step 6: Final answer
    x = 47,146.90

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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.