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Finding the Fourth Proportional to 399,861.25, 599,885.66 and 273,560.96

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Solution

The fourth proportional to 399,861.25, 599,885.66 and 273,560.96 is: 410,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,861.25 : 599,885.66 = 273,560.96 : x
  2. Step 2: Convert to fraction form
    399,861.25/599,885.66 = 273,560.96/x
  3. Step 3: Cross multiply
    399,861.25x = 599,885.66 × 273,560.96
  4. Step 4: Simplify right side
    399,861.25x = 164,105,297,039.83
  5. Step 5: Solve for x
    x = 164,105,297,039.83/399,861.25
  6. Step 6: Final answer
    x = 410,405.60

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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.