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Finding the Fourth Proportional to 554,591.47, 765,336.23 and 299,942.66

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Solution

The fourth proportional to 554,591.47, 765,336.23 and 299,942.66 is: 413,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,591.47 : 765,336.23 = 299,942.66 : x
  2. Step 2: Convert to fraction form
    554,591.47/765,336.23 = 299,942.66/x
  3. Step 3: Cross multiply
    554,591.47x = 765,336.23 × 299,942.66
  4. Step 4: Simplify right side
    554,591.47x = 229,556,984,620.57
  5. Step 5: Solve for x
    x = 229,556,984,620.57/554,591.47
  6. Step 6: Final answer
    x = 413,920.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.