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Finding the Fourth Proportional to 36,892.74, 50,899.95 and 21,780.30

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Solution

The fourth proportional to 36,892.74, 50,899.95 and 21,780.30 is: 30,049.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,892.74 : 50,899.95 = 21,780.30 : x
  2. Step 2: Convert to fraction form
    36,892.74/50,899.95 = 21,780.30/x
  3. Step 3: Cross multiply
    36,892.74x = 50,899.95 × 21,780.30
  4. Step 4: Simplify right side
    36,892.74x = 1,108,616,180.99
  5. Step 5: Solve for x
    x = 1,108,616,180.99/36,892.74
  6. Step 6: Final answer
    x = 30,049.71

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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.