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Finding the Fourth Proportional to 29,772.80, 44,659.20 and 12,236.80

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Solution

The fourth proportional to 29,772.80, 44,659.20 and 12,236.80 is: 18,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,772.80 : 44,659.20 = 12,236.80 : x
  2. Step 2: Convert to fraction form
    29,772.80/44,659.20 = 12,236.80/x
  3. Step 3: Cross multiply
    29,772.80x = 44,659.20 × 12,236.80
  4. Step 4: Simplify right side
    29,772.80x = 546,485,698.56
  5. Step 5: Solve for x
    x = 546,485,698.56/29,772.80
  6. Step 6: Final answer
    x = 18,355.20

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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.