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Finding the Fourth Proportional to 393,366.61, 591,174.42 and 366,711.64

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Solution

The fourth proportional to 393,366.61, 591,174.42 and 366,711.64 is: 551,115.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,366.61 : 591,174.42 = 366,711.64 : x
  2. Step 2: Convert to fraction form
    393,366.61/591,174.42 = 366,711.64/x
  3. Step 3: Cross multiply
    393,366.61x = 591,174.42 × 366,711.64
  4. Step 4: Simplify right side
    393,366.61x = 216,790,538,231.14
  5. Step 5: Solve for x
    x = 216,790,538,231.14/393,366.61
  6. Step 6: Final answer
    x = 551,115.76

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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.