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Finding the Fourth Proportional to 172,371.56, 237,676.59 and 121,367.97

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Solution

The fourth proportional to 172,371.56, 237,676.59 and 121,367.97 is: 167,349.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,371.56 : 237,676.59 = 121,367.97 : x
  2. Step 2: Convert to fraction form
    172,371.56/237,676.59 = 121,367.97/x
  3. Step 3: Cross multiply
    172,371.56x = 237,676.59 × 121,367.97
  4. Step 4: Simplify right side
    172,371.56x = 28,846,325,244.82
  5. Step 5: Solve for x
    x = 28,846,325,244.82/172,371.56
  6. Step 6: Final answer
    x = 167,349.68

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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.