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Finding the Fourth Proportional to 18,523.86, 25,574.85 and 16,530.99

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Solution

The fourth proportional to 18,523.86, 25,574.85 and 16,530.99 is: 22,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.86 : 25,574.85 = 16,530.99 : x
  2. Step 2: Convert to fraction form
    18,523.86/25,574.85 = 16,530.99/x
  3. Step 3: Cross multiply
    18,523.86x = 25,574.85 × 16,530.99
  4. Step 4: Simplify right side
    18,523.86x = 422,777,589.60
  5. Step 5: Solve for x
    x = 422,777,589.60/18,523.86
  6. Step 6: Final answer
    x = 22,823.41

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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.