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Finding the Fourth Proportional to 396,803.23, 547,745.49 and 276,014.61

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Solution

The fourth proportional to 396,803.23, 547,745.49 and 276,014.61 is: 381,009.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,803.23 : 547,745.49 = 276,014.61 : x
  2. Step 2: Convert to fraction form
    396,803.23/547,745.49 = 276,014.61/x
  3. Step 3: Cross multiply
    396,803.23x = 547,745.49 × 276,014.61
  4. Step 4: Simplify right side
    396,803.23x = 151,185,757,801.61
  5. Step 5: Solve for x
    x = 151,185,757,801.61/396,803.23
  6. Step 6: Final answer
    x = 381,009.39

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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.