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Finding the Fourth Proportional to 568,617.21, 784,408.59 and 339,012.86

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Solution

The fourth proportional to 568,617.21, 784,408.59 and 339,012.86 is: 467,668.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,617.21 : 784,408.59 = 339,012.86 : x
  2. Step 2: Convert to fraction form
    568,617.21/784,408.59 = 339,012.86/x
  3. Step 3: Cross multiply
    568,617.21x = 784,408.59 × 339,012.86
  4. Step 4: Simplify right side
    568,617.21x = 265,924,595,582.42
  5. Step 5: Solve for x
    x = 265,924,595,582.42/568,617.21
  6. Step 6: Final answer
    x = 467,668.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.