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Finding the Fourth Proportional to 667,796.05, 921,559.32 and 361,869.75

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Solution

The fourth proportional to 667,796.05, 921,559.32 and 361,869.75 is: 499,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,796.05 : 921,559.32 = 361,869.75 : x
  2. Step 2: Convert to fraction form
    667,796.05/921,559.32 = 361,869.75/x
  3. Step 3: Cross multiply
    667,796.05x = 921,559.32 × 361,869.75
  4. Step 4: Simplify right side
    667,796.05x = 333,484,440,738.57
  5. Step 5: Solve for x
    x = 333,484,440,738.57/667,796.05
  6. Step 6: Final answer
    x = 499,380.68

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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.