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Finding the Fourth Proportional to 33,990.56, 46,910.13 and 20,565.11

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Solution

The fourth proportional to 33,990.56, 46,910.13 and 20,565.11 is: 28,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,990.56 : 46,910.13 = 20,565.11 : x
  2. Step 2: Convert to fraction form
    33,990.56/46,910.13 = 20,565.11/x
  3. Step 3: Cross multiply
    33,990.56x = 46,910.13 × 20,565.11
  4. Step 4: Simplify right side
    33,990.56x = 964,711,749.01
  5. Step 5: Solve for x
    x = 964,711,749.01/33,990.56
  6. Step 6: Final answer
    x = 28,381.76

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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.