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Finding the Fourth Proportional to 18,375.42, 25,370.22 and 16,382.52

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Solution

The fourth proportional to 18,375.42, 25,370.22 and 16,382.52 is: 22,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.42 : 25,370.22 = 16,382.52 : x
  2. Step 2: Convert to fraction form
    18,375.42/25,370.22 = 16,382.52/x
  3. Step 3: Cross multiply
    18,375.42x = 25,370.22 × 16,382.52
  4. Step 4: Simplify right side
    18,375.42x = 415,628,136.55
  5. Step 5: Solve for x
    x = 415,628,136.55/18,375.42
  6. Step 6: Final answer
    x = 22,618.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.