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Finding the Fourth Proportional to 216,910.77, 325,245.45 and 67,108.56

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Solution

The fourth proportional to 216,910.77, 325,245.45 and 67,108.56 is: 100,625.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,910.77 : 325,245.45 = 67,108.56 : x
  2. Step 2: Convert to fraction form
    216,910.77/325,245.45 = 67,108.56/x
  3. Step 3: Cross multiply
    216,910.77x = 325,245.45 × 67,108.56
  4. Step 4: Simplify right side
    216,910.77x = 21,826,753,796.05
  5. Step 5: Solve for x
    x = 21,826,753,796.05/216,910.77
  6. Step 6: Final answer
    x = 100,625.50

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1.5x scale

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.