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Finding the Fourth Proportional to 16,711.72, 25,074.06 and 6,855.64

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Solution

The fourth proportional to 16,711.72, 25,074.06 and 6,855.64 is: 10,286.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,711.72 : 25,074.06 = 6,855.64 : x
  2. Step 2: Convert to fraction form
    16,711.72/25,074.06 = 6,855.64/x
  3. Step 3: Cross multiply
    16,711.72x = 25,074.06 × 6,855.64
  4. Step 4: Simplify right side
    16,711.72x = 171,898,728.70
  5. Step 5: Solve for x
    x = 171,898,728.70/16,711.72
  6. Step 6: Final answer
    x = 10,286.12

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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.