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Finding the Fourth Proportional to 399,554.28, 599,626.26 and 189,191.88

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Solution

The fourth proportional to 399,554.28, 599,626.26 and 189,191.88 is: 283,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,554.28 : 599,626.26 = 189,191.88 : x
  2. Step 2: Convert to fraction form
    399,554.28/599,626.26 = 189,191.88/x
  3. Step 3: Cross multiply
    399,554.28x = 599,626.26 × 189,191.88
  4. Step 4: Simplify right side
    399,554.28x = 113,444,419,426.77
  5. Step 5: Solve for x
    x = 113,444,419,426.77/399,554.28
  6. Step 6: Final answer
    x = 283,927.43

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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.