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Finding the Fourth Proportional to 172,717.74, 259,085.88 and 54,398.34

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Solution

The fourth proportional to 172,717.74, 259,085.88 and 54,398.34 is: 81,600.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,717.74 : 259,085.88 = 54,398.34 : x
  2. Step 2: Convert to fraction form
    172,717.74/259,085.88 = 54,398.34/x
  3. Step 3: Cross multiply
    172,717.74x = 259,085.88 × 54,398.34
  4. Step 4: Simplify right side
    172,717.74x = 14,093,841,789.44
  5. Step 5: Solve for x
    x = 14,093,841,789.44/172,717.74
  6. Step 6: Final answer
    x = 81,600.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.