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Finding the Fourth Proportional to 16,921.44, 25,363.28 and 7,057.44

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Solution

The fourth proportional to 16,921.44, 25,363.28 and 7,057.44 is: 10,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.44 : 25,363.28 = 7,057.44 : x
  2. Step 2: Convert to fraction form
    16,921.44/25,363.28 = 7,057.44/x
  3. Step 3: Cross multiply
    16,921.44x = 25,363.28 × 7,057.44
  4. Step 4: Simplify right side
    16,921.44x = 178,999,826.80
  5. Step 5: Solve for x
    x = 178,999,826.80/16,921.44
  6. Step 6: Final answer
    x = 10,578.29

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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.