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Finding the Fourth Proportional to 133,796.88, 200,669.74 and 67,218.56

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Solution

The fourth proportional to 133,796.88, 200,669.74 and 67,218.56 is: 100,814.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,796.88 : 200,669.74 = 67,218.56 : x
  2. Step 2: Convert to fraction form
    133,796.88/200,669.74 = 67,218.56/x
  3. Step 3: Cross multiply
    133,796.88x = 200,669.74 × 67,218.56
  4. Step 4: Simplify right side
    133,796.88x = 13,488,730,958.37
  5. Step 5: Solve for x
    x = 13,488,730,958.37/133,796.88
  6. Step 6: Final answer
    x = 100,814.99

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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.