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Finding the Fourth Proportional to 216,932.99, 325,430.46 and 67,186.67

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Solution

The fourth proportional to 216,932.99, 325,430.46 and 67,186.67 is: 100,789.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,932.99 : 325,430.46 = 67,186.67 : x
  2. Step 2: Convert to fraction form
    216,932.99/325,430.46 = 67,186.67/x
  3. Step 3: Cross multiply
    216,932.99x = 325,430.46 × 67,186.67
  4. Step 4: Simplify right side
    216,932.99x = 21,864,587,296.82
  5. Step 5: Solve for x
    x = 21,864,587,296.82/216,932.99
  6. Step 6: Final answer
    x = 100,789.59

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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.