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Finding the Fourth Proportional to 626,658.92, 864,794.39 and 347,260.78

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Solution

The fourth proportional to 626,658.92, 864,794.39 and 347,260.78 is: 479,222.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,658.92 : 864,794.39 = 347,260.78 : x
  2. Step 2: Convert to fraction form
    626,658.92/864,794.39 = 347,260.78/x
  3. Step 3: Cross multiply
    626,658.92x = 864,794.39 × 347,260.78
  4. Step 4: Simplify right side
    626,658.92x = 300,309,175,646.84
  5. Step 5: Solve for x
    x = 300,309,175,646.84/626,658.92
  6. Step 6: Final answer
    x = 479,222.69

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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.