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Finding the Fourth Proportional to 665,801.56, 998,797.11 and 216,377.92

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Solution

The fourth proportional to 665,801.56, 998,797.11 and 216,377.92 is: 324,597.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,801.56 : 998,797.11 = 216,377.92 : x
  2. Step 2: Convert to fraction form
    665,801.56/998,797.11 = 216,377.92/x
  3. Step 3: Cross multiply
    665,801.56x = 998,797.11 × 216,377.92
  4. Step 4: Simplify right side
    665,801.56x = 216,117,641,163.81
  5. Step 5: Solve for x
    x = 216,117,641,163.81/665,801.56
  6. Step 6: Final answer
    x = 324,597.68

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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.