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Finding the Fourth Proportional to 57,903.20, 86,919.60 and 44,813.60

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Solution

The fourth proportional to 57,903.20, 86,919.60 and 44,813.60 is: 67,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,903.20 : 86,919.60 = 44,813.60 : x
  2. Step 2: Convert to fraction form
    57,903.20/86,919.60 = 44,813.60/x
  3. Step 3: Cross multiply
    57,903.20x = 86,919.60 × 44,813.60
  4. Step 4: Simplify right side
    57,903.20x = 3,895,180,186.56
  5. Step 5: Solve for x
    x = 3,895,180,186.56/57,903.20
  6. Step 6: Final answer
    x = 67,270.55

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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.