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Finding the Fourth Proportional to 521,105.20, 780,850.73 and 361,491.56

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Solution

The fourth proportional to 521,105.20, 780,850.73 and 361,491.56 is: 541,677.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,105.20 : 780,850.73 = 361,491.56 : x
  2. Step 2: Convert to fraction form
    521,105.20/780,850.73 = 361,491.56/x
  3. Step 3: Cross multiply
    521,105.20x = 780,850.73 × 361,491.56
  4. Step 4: Simplify right side
    521,105.20x = 282,270,948,514.84
  5. Step 5: Solve for x
    x = 282,270,948,514.84/521,105.20
  6. Step 6: Final answer
    x = 541,677.47

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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.