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Finding the Fourth Proportional to 38,793.92, 53,532.29 and 21,796.83

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Solution

The fourth proportional to 38,793.92, 53,532.29 and 21,796.83 is: 30,077.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,793.92 : 53,532.29 = 21,796.83 : x
  2. Step 2: Convert to fraction form
    38,793.92/53,532.29 = 21,796.83/x
  3. Step 3: Cross multiply
    38,793.92x = 53,532.29 × 21,796.83
  4. Step 4: Simplify right side
    38,793.92x = 1,166,834,115.66
  5. Step 5: Solve for x
    x = 1,166,834,115.66/38,793.92
  6. Step 6: Final answer
    x = 30,077.76

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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.