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Finding the Fourth Proportional to 19,331.37, 28,994.49 and 8,790.03

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Solution

The fourth proportional to 19,331.37, 28,994.49 and 8,790.03 is: 13,183.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.37 : 28,994.49 = 8,790.03 : x
  2. Step 2: Convert to fraction form
    19,331.37/28,994.49 = 8,790.03/x
  3. Step 3: Cross multiply
    19,331.37x = 28,994.49 × 8,790.03
  4. Step 4: Simplify right side
    19,331.37x = 254,862,514.79
  5. Step 5: Solve for x
    x = 254,862,514.79/19,331.37
  6. Step 6: Final answer
    x = 13,183.88

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