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Finding the Fourth Proportional to 543,969.28, 815,370.56 and 263,100.16

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Solution

The fourth proportional to 543,969.28, 815,370.56 and 263,100.16 is: 394,368.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,969.28 : 815,370.56 = 263,100.16 : x
  2. Step 2: Convert to fraction form
    543,969.28/815,370.56 = 263,100.16/x
  3. Step 3: Cross multiply
    543,969.28x = 815,370.56 × 263,100.16
  4. Step 4: Simplify right side
    543,969.28x = 214,524,124,795.29
  5. Step 5: Solve for x
    x = 214,524,124,795.29/543,969.28
  6. Step 6: Final answer
    x = 394,368.09

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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.