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Finding the Fourth Proportional to 16,781.99, 25,156.58 and 6,928.13

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Solution

The fourth proportional to 16,781.99, 25,156.58 and 6,928.13 is: 10,385.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,781.99 : 25,156.58 = 6,928.13 : x
  2. Step 2: Convert to fraction form
    16,781.99/25,156.58 = 6,928.13/x
  3. Step 3: Cross multiply
    16,781.99x = 25,156.58 × 6,928.13
  4. Step 4: Simplify right side
    16,781.99x = 174,288,084.85
  5. Step 5: Solve for x
    x = 174,288,084.85/16,781.99
  6. Step 6: Final answer
    x = 10,385.43

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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.