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Finding the Fourth Proportional to 471,618.40, 705,872.40 and 331,650.40

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Solution

The fourth proportional to 471,618.40, 705,872.40 and 331,650.40 is: 496,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,618.40 : 705,872.40 = 331,650.40 : x
  2. Step 2: Convert to fraction form
    471,618.40/705,872.40 = 331,650.40/x
  3. Step 3: Cross multiply
    471,618.40x = 705,872.40 × 331,650.40
  4. Step 4: Simplify right side
    471,618.40x = 234,102,863,808.96
  5. Step 5: Solve for x
    x = 234,102,863,808.96/471,618.40
  6. Step 6: Final answer
    x = 496,381.96

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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.