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Finding the Fourth Proportional to 16,720.70, 25,072.14 and 5,623.70

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Solution

The fourth proportional to 16,720.70, 25,072.14 and 5,623.70 is: 8,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,720.70 : 25,072.14 = 5,623.70 : x
  2. Step 2: Convert to fraction form
    16,720.70/25,072.14 = 5,623.70/x
  3. Step 3: Cross multiply
    16,720.70x = 25,072.14 × 5,623.70
  4. Step 4: Simplify right side
    16,720.70x = 140,998,193.72
  5. Step 5: Solve for x
    x = 140,998,193.72/16,720.70
  6. Step 6: Final answer
    x = 8,432.55

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Why These Related Problems?

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