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Finding the Fourth Proportional to 9,408.87, 12,992.87 and 6,057.56

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Solution

The fourth proportional to 9,408.87, 12,992.87 and 6,057.56 is: 8,364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.87 : 12,992.87 = 6,057.56 : x
  2. Step 2: Convert to fraction form
    9,408.87/12,992.87 = 6,057.56/x
  3. Step 3: Cross multiply
    9,408.87x = 12,992.87 × 6,057.56
  4. Step 4: Simplify right side
    9,408.87x = 78,705,137.22
  5. Step 5: Solve for x
    x = 78,705,137.22/9,408.87
  6. Step 6: Final answer
    x = 8,364.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.