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Finding the Fourth Proportional to 543,858.27, 815,703.16 and 277,815.39

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Solution

The fourth proportional to 543,858.27, 815,703.16 and 277,815.39 is: 416,680.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,858.27 : 815,703.16 = 277,815.39 : x
  2. Step 2: Convert to fraction form
    543,858.27/815,703.16 = 277,815.39/x
  3. Step 3: Cross multiply
    543,858.27x = 815,703.16 × 277,815.39
  4. Step 4: Simplify right side
    543,858.27x = 226,614,891,519.63
  5. Step 5: Solve for x
    x = 226,614,891,519.63/543,858.27
  6. Step 6: Final answer
    x = 416,680.05

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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.