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Finding the Fourth Proportional to 16,998.80, 25,469.40 and 14,061.20

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Solution

The fourth proportional to 16,998.80, 25,469.40 and 14,061.20 is: 21,067.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,998.80 : 25,469.40 = 14,061.20 : x
  2. Step 2: Convert to fraction form
    16,998.80/25,469.40 = 14,061.20/x
  3. Step 3: Cross multiply
    16,998.80x = 25,469.40 × 14,061.20
  4. Step 4: Simplify right side
    16,998.80x = 358,130,327.28
  5. Step 5: Solve for x
    x = 358,130,327.28/16,998.80
  6. Step 6: Final answer
    x = 21,067.98

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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.