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Finding the Fourth Proportional to 79,787.97, 119,690.33 and 35,424.68

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Solution

The fourth proportional to 79,787.97, 119,690.33 and 35,424.68 is: 53,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,787.97 : 119,690.33 = 35,424.68 : x
  2. Step 2: Convert to fraction form
    79,787.97/119,690.33 = 35,424.68/x
  3. Step 3: Cross multiply
    79,787.97x = 119,690.33 × 35,424.68
  4. Step 4: Simplify right side
    79,787.97x = 4,239,990,863.77
  5. Step 5: Solve for x
    x = 4,239,990,863.77/79,787.97
  6. Step 6: Final answer
    x = 53,140.73

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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.