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Finding the Fourth Proportional to 447,474.64, 617,542.56 and 256,516.73

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Solution

The fourth proportional to 447,474.64, 617,542.56 and 256,516.73 is: 354,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,474.64 : 617,542.56 = 256,516.73 : x
  2. Step 2: Convert to fraction form
    447,474.64/617,542.56 = 256,516.73/x
  3. Step 3: Cross multiply
    447,474.64x = 617,542.56 × 256,516.73
  4. Step 4: Simplify right side
    447,474.64x = 158,409,998,127.03
  5. Step 5: Solve for x
    x = 158,409,998,127.03/447,474.64
  6. Step 6: Final answer
    x = 354,008.88

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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.