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Finding the Fourth Proportional to 14,690.82, 20,273.76 and 7,976.88

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Solution

The fourth proportional to 14,690.82, 20,273.76 and 7,976.88 is: 11,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,690.82 : 20,273.76 = 7,976.88 : x
  2. Step 2: Convert to fraction form
    14,690.82/20,273.76 = 7,976.88/x
  3. Step 3: Cross multiply
    14,690.82x = 20,273.76 × 7,976.88
  4. Step 4: Simplify right side
    14,690.82x = 161,721,299.98
  5. Step 5: Solve for x
    x = 161,721,299.98/14,690.82
  6. Step 6: Final answer
    x = 11,008.33

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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.