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Finding the Fourth Proportional to 412,242.70, 617,314.26 and 271,574.86

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Solution

The fourth proportional to 412,242.70, 617,314.26 and 271,574.86 is: 406,670.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,242.70 : 617,314.26 = 271,574.86 : x
  2. Step 2: Convert to fraction form
    412,242.70/617,314.26 = 271,574.86/x
  3. Step 3: Cross multiply
    412,242.70x = 617,314.26 × 271,574.86
  4. Step 4: Simplify right side
    412,242.70x = 167,647,033,735.50
  5. Step 5: Solve for x
    x = 167,647,033,735.50/412,242.70
  6. Step 6: Final answer
    x = 406,670.72

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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.