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Finding the Fourth Proportional to 17,890.80, 26,836.20 and 16,249.20

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Solution

The fourth proportional to 17,890.80, 26,836.20 and 16,249.20 is: 24,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,890.80 : 26,836.20 = 16,249.20 : x
  2. Step 2: Convert to fraction form
    17,890.80/26,836.20 = 16,249.20/x
  3. Step 3: Cross multiply
    17,890.80x = 26,836.20 × 16,249.20
  4. Step 4: Simplify right side
    17,890.80x = 436,066,781.04
  5. Step 5: Solve for x
    x = 436,066,781.04/17,890.80
  6. Step 6: Final answer
    x = 24,373.80

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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.