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Finding the Fourth Proportional to 521,983.70, 782,991.84 and 248,369.98

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Solution

The fourth proportional to 521,983.70, 782,991.84 and 248,369.98 is: 372,562.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,983.70 : 782,991.84 = 248,369.98 : x
  2. Step 2: Convert to fraction form
    521,983.70/782,991.84 = 248,369.98/x
  3. Step 3: Cross multiply
    521,983.70x = 782,991.84 × 248,369.98
  4. Step 4: Simplify right side
    521,983.70x = 194,471,667,640.96
  5. Step 5: Solve for x
    x = 194,471,667,640.96/521,983.70
  6. Step 6: Final answer
    x = 372,562.72

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1.5x scale

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.