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Finding the Fourth Proportional to 16,998.80, 25,498.20 and 4,518.80

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Solution

The fourth proportional to 16,998.80, 25,498.20 and 4,518.80 is: 6,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,998.80 : 25,498.20 = 4,518.80 : x
  2. Step 2: Convert to fraction form
    16,998.80/25,498.20 = 4,518.80/x
  3. Step 3: Cross multiply
    16,998.80x = 25,498.20 × 4,518.80
  4. Step 4: Simplify right side
    16,998.80x = 115,221,266.16
  5. Step 5: Solve for x
    x = 115,221,266.16/16,998.80
  6. Step 6: Final answer
    x = 6,778.20

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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.