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Finding the Fourth Proportional to 67,218.36, 100,889.84 and 33,961.84

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Solution

The fourth proportional to 67,218.36, 100,889.84 and 33,961.84 is: 50,974.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,218.36 : 100,889.84 = 33,961.84 : x
  2. Step 2: Convert to fraction form
    67,218.36/100,889.84 = 33,961.84/x
  3. Step 3: Cross multiply
    67,218.36x = 100,889.84 × 33,961.84
  4. Step 4: Simplify right side
    67,218.36x = 3,426,404,603.71
  5. Step 5: Solve for x
    x = 3,426,404,603.71/67,218.36
  6. Step 6: Final answer
    x = 50,974.24

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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.