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Finding the Fourth Proportional to 568,391.48, 784,035.96 and 338,795.78

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Solution

The fourth proportional to 568,391.48, 784,035.96 and 338,795.78 is: 467,332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,391.48 : 784,035.96 = 338,795.78 : x
  2. Step 2: Convert to fraction form
    568,391.48/784,035.96 = 338,795.78/x
  3. Step 3: Cross multiply
    568,391.48x = 784,035.96 × 338,795.78
  4. Step 4: Simplify right side
    568,391.48x = 265,628,074,616.25
  5. Step 5: Solve for x
    x = 265,628,074,616.25/568,391.48
  6. Step 6: Final answer
    x = 467,332.96

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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.