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Finding the Fourth Proportional to 79,621.91, 119,428.93 and 29,698.12

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Solution

The fourth proportional to 79,621.91, 119,428.93 and 29,698.12 is: 44,545.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,621.91 : 119,428.93 = 29,698.12 : x
  2. Step 2: Convert to fraction form
    79,621.91/119,428.93 = 29,698.12/x
  3. Step 3: Cross multiply
    79,621.91x = 119,428.93 × 29,698.12
  4. Step 4: Simplify right side
    79,621.91x = 3,546,814,694.61
  5. Step 5: Solve for x
    x = 3,546,814,694.61/79,621.91
  6. Step 6: Final answer
    x = 44,545.71

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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.