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Finding the Fourth Proportional to 119,783.52, 165,310.56 and 66,079.20

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Solution

The fourth proportional to 119,783.52, 165,310.56 and 66,079.20 is: 91,194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,783.52 : 165,310.56 = 66,079.20 : x
  2. Step 2: Convert to fraction form
    119,783.52/165,310.56 = 66,079.20/x
  3. Step 3: Cross multiply
    119,783.52x = 165,310.56 × 66,079.20
  4. Step 4: Simplify right side
    119,783.52x = 10,923,589,556.35
  5. Step 5: Solve for x
    x = 10,923,589,556.35/119,783.52
  6. Step 6: Final answer
    x = 91,194.43

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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.