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Finding the Fourth Proportional to 13,252.80, 19,879.20 and 12,043.20

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Solution

The fourth proportional to 13,252.80, 19,879.20 and 12,043.20 is: 18,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,252.80 : 19,879.20 = 12,043.20 : x
  2. Step 2: Convert to fraction form
    13,252.80/19,879.20 = 12,043.20/x
  3. Step 3: Cross multiply
    13,252.80x = 19,879.20 × 12,043.20
  4. Step 4: Simplify right side
    13,252.80x = 239,409,181.44
  5. Step 5: Solve for x
    x = 239,409,181.44/13,252.80
  6. Step 6: Final answer
    x = 18,064.80

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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.