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Finding the Fourth Proportional to 33,805.20, 50,712.60 and 10,429.20

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Solution

The fourth proportional to 33,805.20, 50,712.60 and 10,429.20 is: 15,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,805.20 : 50,712.60 = 10,429.20 : x
  2. Step 2: Convert to fraction form
    33,805.20/50,712.60 = 10,429.20/x
  3. Step 3: Cross multiply
    33,805.20x = 50,712.60 × 10,429.20
  4. Step 4: Simplify right side
    33,805.20x = 528,891,847.92
  5. Step 5: Solve for x
    x = 528,891,847.92/33,805.20
  6. Step 6: Final answer
    x = 15,645.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.