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Finding the Fourth Proportional to 262,647.42, 394,033.50 and 85,154.55

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Solution

The fourth proportional to 262,647.42, 394,033.50 and 85,154.55 is: 127,752.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,647.42 : 394,033.50 = 85,154.55 : x
  2. Step 2: Convert to fraction form
    262,647.42/394,033.50 = 85,154.55/x
  3. Step 3: Cross multiply
    262,647.42x = 394,033.50 × 85,154.55
  4. Step 4: Simplify right side
    262,647.42x = 33,553,745,377.43
  5. Step 5: Solve for x
    x = 33,553,745,377.43/262,647.42
  6. Step 6: Final answer
    x = 127,752.05

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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.