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Finding the Fourth Proportional to 25,879.40, 38,630.24 and 22,205.24

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Solution

The fourth proportional to 25,879.40, 38,630.24 and 22,205.24 is: 33,145.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.40 : 38,630.24 = 22,205.24 : x
  2. Step 2: Convert to fraction form
    25,879.40/38,630.24 = 22,205.24/x
  3. Step 3: Cross multiply
    25,879.40x = 38,630.24 × 22,205.24
  4. Step 4: Simplify right side
    25,879.40x = 857,793,750.46
  5. Step 5: Solve for x
    x = 857,793,750.46/25,879.40
  6. Step 6: Final answer
    x = 33,145.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.