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Finding the Fourth Proportional to 29,383.31, 40,481.29 and 20,299.97

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Solution

The fourth proportional to 29,383.31, 40,481.29 and 20,299.97 is: 27,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,383.31 : 40,481.29 = 20,299.97 : x
  2. Step 2: Convert to fraction form
    29,383.31/40,481.29 = 20,299.97/x
  3. Step 3: Cross multiply
    29,383.31x = 40,481.29 × 20,299.97
  4. Step 4: Simplify right side
    29,383.31x = 821,768,928.53
  5. Step 5: Solve for x
    x = 821,768,928.53/29,383.31
  6. Step 6: Final answer
    x = 27,967.20

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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.