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Finding the Fourth Proportional to 568,165.32, 851,436 and 417,221.64

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Solution

The fourth proportional to 568,165.32, 851,436 and 417,221.64 is: 625,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,165.32 : 851,436 = 417,221.64 : x
  2. Step 2: Convert to fraction form
    568,165.32/851,436 = 417,221.64/x
  3. Step 3: Cross multiply
    568,165.32x = 851,436 × 417,221.64
  4. Step 4: Simplify right side
    568,165.32x = 355,237,524,275.04
  5. Step 5: Solve for x
    x = 355,237,524,275.04/568,165.32
  6. Step 6: Final answer
    x = 625,236.20

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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.