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Finding the Fourth Proportional to 33,308.80, 45,965.36 and 18,200.80

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Solution

The fourth proportional to 33,308.80, 45,965.36 and 18,200.80 is: 25,116.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,308.80 : 45,965.36 = 18,200.80 : x
  2. Step 2: Convert to fraction form
    33,308.80/45,965.36 = 18,200.80/x
  3. Step 3: Cross multiply
    33,308.80x = 45,965.36 × 18,200.80
  4. Step 4: Simplify right side
    33,308.80x = 836,606,324.29
  5. Step 5: Solve for x
    x = 836,606,324.29/33,308.80
  6. Step 6: Final answer
    x = 25,116.68

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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.