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Finding the Fourth Proportional to 16,212.94, 24,319.40 and 12,520.54

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Solution

The fourth proportional to 16,212.94, 24,319.40 and 12,520.54 is: 18,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,212.94 : 24,319.40 = 12,520.54 : x
  2. Step 2: Convert to fraction form
    16,212.94/24,319.40 = 12,520.54/x
  3. Step 3: Cross multiply
    16,212.94x = 24,319.40 × 12,520.54
  4. Step 4: Simplify right side
    16,212.94x = 304,492,020.48
  5. Step 5: Solve for x
    x = 304,492,020.48/16,212.94
  6. Step 6: Final answer
    x = 18,780.80

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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.