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Finding the Fourth Proportional to 618,964.01, 928,449.50 and 281,768.80

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Solution

The fourth proportional to 618,964.01, 928,449.50 and 281,768.80 is: 422,654.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,964.01 : 928,449.50 = 281,768.80 : x
  2. Step 2: Convert to fraction form
    618,964.01/928,449.50 = 281,768.80/x
  3. Step 3: Cross multiply
    618,964.01x = 928,449.50 × 281,768.80
  4. Step 4: Simplify right side
    618,964.01x = 261,608,101,475.60
  5. Step 5: Solve for x
    x = 261,608,101,475.60/618,964.01
  6. Step 6: Final answer
    x = 422,654.79

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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.