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Finding the Fourth Proportional to 194,163.80, 291,278.90 and 88,991.78

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Solution

The fourth proportional to 194,163.80, 291,278.90 and 88,991.78 is: 133,502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,163.80 : 291,278.90 = 88,991.78 : x
  2. Step 2: Convert to fraction form
    194,163.80/291,278.90 = 88,991.78/x
  3. Step 3: Cross multiply
    194,163.80x = 291,278.90 × 88,991.78
  4. Step 4: Simplify right side
    194,163.80x = 25,921,426,553.53
  5. Step 5: Solve for x
    x = 25,921,426,553.53/194,163.80
  6. Step 6: Final answer
    x = 133,502.88

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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.