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Finding the Fourth Proportional to 69,161.20, 95,441.20 and 38,946.40

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Solution

The fourth proportional to 69,161.20, 95,441.20 and 38,946.40 is: 53,745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,161.20 : 95,441.20 = 38,946.40 : x
  2. Step 2: Convert to fraction form
    69,161.20/95,441.20 = 38,946.40/x
  3. Step 3: Cross multiply
    69,161.20x = 95,441.20 × 38,946.40
  4. Step 4: Simplify right side
    69,161.20x = 3,717,091,151.68
  5. Step 5: Solve for x
    x = 3,717,091,151.68/69,161.20
  6. Step 6: Final answer
    x = 53,745.32

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Similar ratio
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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.