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Finding the Fourth Proportional to 511,788.27, 768,347.61 and 393,542.62

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Solution

The fourth proportional to 511,788.27, 768,347.61 and 393,542.62 is: 590,825.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,788.27 : 768,347.61 = 393,542.62 : x
  2. Step 2: Convert to fraction form
    511,788.27/768,347.61 = 393,542.62/x
  3. Step 3: Cross multiply
    511,788.27x = 768,347.61 × 393,542.62
  4. Step 4: Simplify right side
    511,788.27x = 302,377,531,510.14
  5. Step 5: Solve for x
    x = 302,377,531,510.14/511,788.27
  6. Step 6: Final answer
    x = 590,825.44

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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.