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Finding the Fourth Proportional to 215,195.50, 322,845.09 and 67,451.50

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Solution

The fourth proportional to 215,195.50, 322,845.09 and 67,451.50 is: 101,193.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,195.50 : 322,845.09 = 67,451.50 : x
  2. Step 2: Convert to fraction form
    215,195.50/322,845.09 = 67,451.50/x
  3. Step 3: Cross multiply
    215,195.50x = 322,845.09 × 67,451.50
  4. Step 4: Simplify right side
    215,195.50x = 21,776,385,588.14
  5. Step 5: Solve for x
    x = 21,776,385,588.14/215,195.50
  6. Step 6: Final answer
    x = 101,193.50

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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.