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Finding the Fourth Proportional to 17,879.40, 24,672.33 and 9,921.15

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Solution

The fourth proportional to 17,879.40, 24,672.33 and 9,921.15 is: 13,690.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,879.40 : 24,672.33 = 9,921.15 : x
  2. Step 2: Convert to fraction form
    17,879.40/24,672.33 = 9,921.15/x
  3. Step 3: Cross multiply
    17,879.40x = 24,672.33 × 9,921.15
  4. Step 4: Simplify right side
    17,879.40x = 244,777,886.78
  5. Step 5: Solve for x
    x = 244,777,886.78/17,879.40
  6. Step 6: Final answer
    x = 13,690.50

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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.