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Finding the Fourth Proportional to 411,344.21, 616,794.89 and 221,906.27

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Solution

The fourth proportional to 411,344.21, 616,794.89 and 221,906.27 is: 332,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,344.21 : 616,794.89 = 221,906.27 : x
  2. Step 2: Convert to fraction form
    411,344.21/616,794.89 = 221,906.27/x
  3. Step 3: Cross multiply
    411,344.21x = 616,794.89 × 221,906.27
  4. Step 4: Simplify right side
    411,344.21x = 136,870,653,827.42
  5. Step 5: Solve for x
    x = 136,870,653,827.42/411,344.21
  6. Step 6: Final answer
    x = 332,739.95

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1.5x scale

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.