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Finding the Fourth Proportional to 119,884.56, 165,428.90 and 66,166.11

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Solution

The fourth proportional to 119,884.56, 165,428.90 and 66,166.11 is: 91,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,884.56 : 165,428.90 = 66,166.11 : x
  2. Step 2: Convert to fraction form
    119,884.56/165,428.90 = 66,166.11/x
  3. Step 3: Cross multiply
    119,884.56x = 165,428.90 × 66,166.11
  4. Step 4: Simplify right side
    119,884.56x = 10,945,786,959.99
  5. Step 5: Solve for x
    x = 10,945,786,959.99/119,884.56
  6. Step 6: Final answer
    x = 91,302.73

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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.