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Finding the Fourth Proportional to 665,883.17, 998,833.97 and 216,606.39

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Solution

The fourth proportional to 665,883.17, 998,833.97 and 216,606.39 is: 324,912.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,883.17 : 998,833.97 = 216,606.39 : x
  2. Step 2: Convert to fraction form
    665,883.17/998,833.97 = 216,606.39/x
  3. Step 3: Cross multiply
    665,883.17x = 998,833.97 × 216,606.39
  4. Step 4: Simplify right side
    665,883.17x = 216,353,817,246.96
  5. Step 5: Solve for x
    x = 216,353,817,246.96/665,883.17
  6. Step 6: Final answer
    x = 324,912.58

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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.