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Finding the Fourth Proportional to 216,768.77, 325,184.32 and 67,020.74

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Solution

The fourth proportional to 216,768.77, 325,184.32 and 67,020.74 is: 100,540.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,768.77 : 325,184.32 = 67,020.74 : x
  2. Step 2: Convert to fraction form
    216,768.77/325,184.32 = 67,020.74/x
  3. Step 3: Cross multiply
    216,768.77x = 325,184.32 × 67,020.74
  4. Step 4: Simplify right side
    216,768.77x = 21,794,093,511.47
  5. Step 5: Solve for x
    x = 21,794,093,511.47/216,768.77
  6. Step 6: Final answer
    x = 100,540.74

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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.