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Finding the Fourth Proportional to 16,408.99, 24,615.90 and 5,311.99

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Solution

The fourth proportional to 16,408.99, 24,615.90 and 5,311.99 is: 7,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,408.99 : 24,615.90 = 5,311.99 : x
  2. Step 2: Convert to fraction form
    16,408.99/24,615.90 = 5,311.99/x
  3. Step 3: Cross multiply
    16,408.99x = 24,615.90 × 5,311.99
  4. Step 4: Simplify right side
    16,408.99x = 130,759,414.64
  5. Step 5: Solve for x
    x = 130,759,414.64/16,408.99
  6. Step 6: Final answer
    x = 7,968.77

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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.