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Finding the Fourth Proportional to 216,933.99, 325,431.96 and 67,187.67

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Solution

The fourth proportional to 216,933.99, 325,431.96 and 67,187.67 is: 100,791.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,933.99 : 325,431.96 = 67,187.67 : x
  2. Step 2: Convert to fraction form
    216,933.99/325,431.96 = 67,187.67/x
  3. Step 3: Cross multiply
    216,933.99x = 325,431.96 × 67,187.67
  4. Step 4: Simplify right side
    216,933.99x = 21,865,015,135.93
  5. Step 5: Solve for x
    x = 21,865,015,135.93/216,933.99
  6. Step 6: Final answer
    x = 100,791.10

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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.