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Finding the Fourth Proportional to 570,621.14, 855,188.13 and 317,891.42

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Solution

The fourth proportional to 570,621.14, 855,188.13 and 317,891.42 is: 476,422.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,621.14 : 855,188.13 = 317,891.42 : x
  2. Step 2: Convert to fraction form
    570,621.14/855,188.13 = 317,891.42/x
  3. Step 3: Cross multiply
    570,621.14x = 855,188.13 × 317,891.42
  4. Step 4: Simplify right side
    570,621.14x = 271,856,969,012.85
  5. Step 5: Solve for x
    x = 271,856,969,012.85/570,621.14
  6. Step 6: Final answer
    x = 476,422.88

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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.