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Finding the Fourth Proportional to 263,401.44, 395,114.88 and 85,908.12

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Solution

The fourth proportional to 263,401.44, 395,114.88 and 85,908.12 is: 128,866.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,401.44 : 395,114.88 = 85,908.12 : x
  2. Step 2: Convert to fraction form
    263,401.44/395,114.88 = 85,908.12/x
  3. Step 3: Cross multiply
    263,401.44x = 395,114.88 × 85,908.12
  4. Step 4: Simplify right side
    263,401.44x = 33,943,576,524.83
  5. Step 5: Solve for x
    x = 33,943,576,524.83/263,401.44
  6. Step 6: Final answer
    x = 128,866.33

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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.