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Finding the Fourth Proportional to 289,183.92, 399,069.90 and 161,859.48

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Solution

The fourth proportional to 289,183.92, 399,069.90 and 161,859.48 is: 223,363.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,183.92 : 399,069.90 = 161,859.48 : x
  2. Step 2: Convert to fraction form
    289,183.92/399,069.90 = 161,859.48/x
  3. Step 3: Cross multiply
    289,183.92x = 399,069.90 × 161,859.48
  4. Step 4: Simplify right side
    289,183.92x = 64,593,246,497.65
  5. Step 5: Solve for x
    x = 64,593,246,497.65/289,183.92
  6. Step 6: Final answer
    x = 223,363.89

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1.5x scale

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.