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Finding the Fourth Proportional to 263,012.80, 394,713.60 and 174,236.80

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Solution

The fourth proportional to 263,012.80, 394,713.60 and 174,236.80 is: 261,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,012.80 : 394,713.60 = 174,236.80 : x
  2. Step 2: Convert to fraction form
    263,012.80/394,713.60 = 174,236.80/x
  3. Step 3: Cross multiply
    263,012.80x = 394,713.60 × 174,236.80
  4. Step 4: Simplify right side
    263,012.80x = 68,773,634,580.48
  5. Step 5: Solve for x
    x = 68,773,634,580.48/263,012.80
  6. Step 6: Final answer
    x = 261,483.98

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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.