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Finding the Fourth Proportional to 36,531.68, 50,416.80 and 20,616.80

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Solution

The fourth proportional to 36,531.68, 50,416.80 and 20,616.80 is: 28,452.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,531.68 : 50,416.80 = 20,616.80 : x
  2. Step 2: Convert to fraction form
    36,531.68/50,416.80 = 20,616.80/x
  3. Step 3: Cross multiply
    36,531.68x = 50,416.80 × 20,616.80
  4. Step 4: Simplify right side
    36,531.68x = 1,039,433,082.24
  5. Step 5: Solve for x
    x = 1,039,433,082.24/36,531.68
  6. Step 6: Final answer
    x = 28,452.92

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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.