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Finding the Fourth Proportional to 543,972.78, 815,375.81 and 263,103.66

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Solution

The fourth proportional to 543,972.78, 815,375.81 and 263,103.66 is: 394,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,972.78 : 815,375.81 = 263,103.66 : x
  2. Step 2: Convert to fraction form
    543,972.78/815,375.81 = 263,103.66/x
  3. Step 3: Cross multiply
    543,972.78x = 815,375.81 × 263,103.66
  4. Step 4: Simplify right side
    543,972.78x = 214,528,359,886.47
  5. Step 5: Solve for x
    x = 214,528,359,886.47/543,972.78
  6. Step 6: Final answer
    x = 394,373.34

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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.