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Finding the Fourth Proportional to 417,216.37, 628,951.60 and 389,408.83

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Solution

The fourth proportional to 417,216.37, 628,951.60 and 389,408.83 is: 587,031.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,216.37 : 628,951.60 = 389,408.83 : x
  2. Step 2: Convert to fraction form
    417,216.37/628,951.60 = 389,408.83/x
  3. Step 3: Cross multiply
    417,216.37x = 628,951.60 × 389,408.83
  4. Step 4: Simplify right side
    417,216.37x = 244,919,306,944.44
  5. Step 5: Solve for x
    x = 244,919,306,944.44/417,216.37
  6. Step 6: Final answer
    x = 587,031.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.