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Finding the Fourth Proportional to 20,993.99, 28,975.47 and 12,044.45

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Solution

The fourth proportional to 20,993.99, 28,975.47 and 12,044.45 is: 16,623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.99 : 28,975.47 = 12,044.45 : x
  2. Step 2: Convert to fraction form
    20,993.99/28,975.47 = 12,044.45/x
  3. Step 3: Cross multiply
    20,993.99x = 28,975.47 × 12,044.45
  4. Step 4: Simplify right side
    20,993.99x = 348,993,531.68
  5. Step 5: Solve for x
    x = 348,993,531.68/20,993.99
  6. Step 6: Final answer
    x = 16,623.50

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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.