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Finding the Fourth Proportional to 543,871.26, 815,889.87 and 277,486.56

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Solution

The fourth proportional to 543,871.26, 815,889.87 and 277,486.56 is: 416,272.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,871.26 : 815,889.87 = 277,486.56 : x
  2. Step 2: Convert to fraction form
    543,871.26/815,889.87 = 277,486.56/x
  3. Step 3: Cross multiply
    543,871.26x = 815,889.87 × 277,486.56
  4. Step 4: Simplify right side
    543,871.26x = 226,398,473,365.15
  5. Step 5: Solve for x
    x = 226,398,473,365.15/543,871.26
  6. Step 6: Final answer
    x = 416,272.18

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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.