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Finding the Fourth Proportional to 512,130.33, 768,278.94 and 192,306.96

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Solution

The fourth proportional to 512,130.33, 768,278.94 and 192,306.96 is: 288,491.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,130.33 : 768,278.94 = 192,306.96 : x
  2. Step 2: Convert to fraction form
    512,130.33/768,278.94 = 192,306.96/x
  3. Step 3: Cross multiply
    512,130.33x = 768,278.94 × 192,306.96
  4. Step 4: Simplify right side
    512,130.33x = 147,745,387,383.42
  5. Step 5: Solve for x
    x = 147,745,387,383.42/512,130.33
  6. Step 6: Final answer
    x = 288,491.77

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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.