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Finding the Fourth Proportional to 30,676.56, 42,331.23 and 17,245.26

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Solution

The fourth proportional to 30,676.56, 42,331.23 and 17,245.26 is: 23,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,676.56 : 42,331.23 = 17,245.26 : x
  2. Step 2: Convert to fraction form
    30,676.56/42,331.23 = 17,245.26/x
  3. Step 3: Cross multiply
    30,676.56x = 42,331.23 × 17,245.26
  4. Step 4: Simplify right side
    30,676.56x = 730,013,067.47
  5. Step 5: Solve for x
    x = 730,013,067.47/30,676.56
  6. Step 6: Final answer
    x = 23,797.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.