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Finding the Fourth Proportional to 119,996.56, 165,581.05 and 66,278.37

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Solution

The fourth proportional to 119,996.56, 165,581.05 and 66,278.37 is: 91,456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,996.56 : 165,581.05 = 66,278.37 : x
  2. Step 2: Convert to fraction form
    119,996.56/165,581.05 = 66,278.37/x
  3. Step 3: Cross multiply
    119,996.56x = 165,581.05 × 66,278.37
  4. Step 4: Simplify right side
    119,996.56x = 10,974,442,096.89
  5. Step 5: Solve for x
    x = 10,974,442,096.89/119,996.56
  6. Step 6: Final answer
    x = 91,456.31

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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.