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Finding the Fourth Proportional to 669,604.11, 923,909.89 and 397,763.65

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Solution

The fourth proportional to 669,604.11, 923,909.89 and 397,763.65 is: 548,828.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,604.11 : 923,909.89 = 397,763.65 : x
  2. Step 2: Convert to fraction form
    669,604.11/923,909.89 = 397,763.65/x
  3. Step 3: Cross multiply
    669,604.11x = 923,909.89 × 397,763.65
  4. Step 4: Simplify right side
    669,604.11x = 367,497,770,117.50
  5. Step 5: Solve for x
    x = 367,497,770,117.50/669,604.11
  6. Step 6: Final answer
    x = 548,828.43

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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.