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Finding the Fourth Proportional to 16,761.20, 25,120.20 and 12,846.20

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Solution

The fourth proportional to 16,761.20, 25,120.20 and 12,846.20 is: 19,252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,761.20 : 25,120.20 = 12,846.20 : x
  2. Step 2: Convert to fraction form
    16,761.20/25,120.20 = 12,846.20/x
  3. Step 3: Cross multiply
    16,761.20x = 25,120.20 × 12,846.20
  4. Step 4: Simplify right side
    16,761.20x = 322,699,113.24
  5. Step 5: Solve for x
    x = 322,699,113.24/16,761.20
  6. Step 6: Final answer
    x = 19,252.75

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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.