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Finding the Fourth Proportional to 119,937.52, 165,514.38 and 66,222.64

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Solution

The fourth proportional to 119,937.52, 165,514.38 and 66,222.64 is: 91,387.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,937.52 : 165,514.38 = 66,222.64 : x
  2. Step 2: Convert to fraction form
    119,937.52/165,514.38 = 66,222.64/x
  3. Step 3: Cross multiply
    119,937.52x = 165,514.38 × 66,222.64
  4. Step 4: Simplify right side
    119,937.52x = 10,960,799,201.56
  5. Step 5: Solve for x
    x = 10,960,799,201.56/119,937.52
  6. Step 6: Final answer
    x = 91,387.58

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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.