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Finding the Fourth Proportional to 664,832.28, 923,662.40 and 656,860.67

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Solution

The fourth proportional to 664,832.28, 923,662.40 and 656,860.67 is: 912,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,832.28 : 923,662.40 = 656,860.67 : x
  2. Step 2: Convert to fraction form
    664,832.28/923,662.40 = 656,860.67/x
  3. Step 3: Cross multiply
    664,832.28x = 923,662.40 × 656,860.67
  4. Step 4: Simplify right side
    664,832.28x = 606,717,498,299.50
  5. Step 5: Solve for x
    x = 606,717,498,299.50/664,832.28
  6. Step 6: Final answer
    x = 912,587.30

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.