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Finding the Fourth Proportional to 159,300.97, 219,833.62 and 87,679.44

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Solution

The fourth proportional to 159,300.97, 219,833.62 and 87,679.44 is: 120,996.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,300.97 : 219,833.62 = 87,679.44 : x
  2. Step 2: Convert to fraction form
    159,300.97/219,833.62 = 87,679.44/x
  3. Step 3: Cross multiply
    159,300.97x = 219,833.62 × 87,679.44
  4. Step 4: Simplify right side
    159,300.97x = 19,274,888,694.77
  5. Step 5: Solve for x
    x = 19,274,888,694.77/159,300.97
  6. Step 6: Final answer
    x = 120,996.68

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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.