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Finding the Fourth Proportional to 16,913.20, 25,369.80 and 16,427.20

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Solution

The fourth proportional to 16,913.20, 25,369.80 and 16,427.20 is: 24,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,913.20 : 25,369.80 = 16,427.20 : x
  2. Step 2: Convert to fraction form
    16,913.20/25,369.80 = 16,427.20/x
  3. Step 3: Cross multiply
    16,913.20x = 25,369.80 × 16,427.20
  4. Step 4: Simplify right side
    16,913.20x = 416,754,778.56
  5. Step 5: Solve for x
    x = 416,754,778.56/16,913.20
  6. Step 6: Final answer
    x = 24,640.80

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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.