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Finding the Fourth Proportional to 263,244.31, 394,866.16 and 85,751.03

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Solution

The fourth proportional to 263,244.31, 394,866.16 and 85,751.03 is: 128,626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,244.31 : 394,866.16 = 85,751.03 : x
  2. Step 2: Convert to fraction form
    263,244.31/394,866.16 = 85,751.03/x
  3. Step 3: Cross multiply
    263,244.31x = 394,866.16 × 85,751.03
  4. Step 4: Simplify right side
    263,244.31x = 33,860,179,503.39
  5. Step 5: Solve for x
    x = 33,860,179,503.39/263,244.31
  6. Step 6: Final answer
    x = 128,626.45

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1.5x scale

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.