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Finding the Fourth Proportional to 16,685.88, 25,007.22 and 6,813.87

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Solution

The fourth proportional to 16,685.88, 25,007.22 and 6,813.87 is: 10,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,685.88 : 25,007.22 = 6,813.87 : x
  2. Step 2: Convert to fraction form
    16,685.88/25,007.22 = 6,813.87/x
  3. Step 3: Cross multiply
    16,685.88x = 25,007.22 × 6,813.87
  4. Step 4: Simplify right side
    16,685.88x = 170,395,946.14
  5. Step 5: Solve for x
    x = 170,395,946.14/16,685.88
  6. Step 6: Final answer
    x = 10,211.98

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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.