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Finding the Fourth Proportional to 481,640.91, 664,664.45 and 266,794.89

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Solution

The fourth proportional to 481,640.91, 664,664.45 and 266,794.89 is: 368,176.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,640.91 : 664,664.45 = 266,794.89 : x
  2. Step 2: Convert to fraction form
    481,640.91/664,664.45 = 266,794.89/x
  3. Step 3: Cross multiply
    481,640.91x = 664,664.45 × 266,794.89
  4. Step 4: Simplify right side
    481,640.91x = 177,329,077,490.69
  5. Step 5: Solve for x
    x = 177,329,077,490.69/481,640.91
  6. Step 6: Final answer
    x = 368,176.94

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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.