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Finding the Fourth Proportional to 382,081.20, 573,121.80 and 346,651.80

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Solution

The fourth proportional to 382,081.20, 573,121.80 and 346,651.80 is: 519,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,081.20 : 573,121.80 = 346,651.80 : x
  2. Step 2: Convert to fraction form
    382,081.20/573,121.80 = 346,651.80/x
  3. Step 3: Cross multiply
    382,081.20x = 573,121.80 × 346,651.80
  4. Step 4: Simplify right side
    382,081.20x = 198,673,703,589.24
  5. Step 5: Solve for x
    x = 198,673,703,589.24/382,081.20
  6. Step 6: Final answer
    x = 519,977.70

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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.