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Finding the Fourth Proportional to 617,908.20, 926,171.10 and 262,861.80

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Solution

The fourth proportional to 617,908.20, 926,171.10 and 262,861.80 is: 393,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,908.20 : 926,171.10 = 262,861.80 : x
  2. Step 2: Convert to fraction form
    617,908.20/926,171.10 = 262,861.80/x
  3. Step 3: Cross multiply
    617,908.20x = 926,171.10 × 262,861.80
  4. Step 4: Simplify right side
    617,908.20x = 243,455,002,453.98
  5. Step 5: Solve for x
    x = 243,455,002,453.98/617,908.20
  6. Step 6: Final answer
    x = 393,998.66

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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.