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Finding the Fourth Proportional to 11,137.69, 15,367.30 and 6,169.69

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Solution

The fourth proportional to 11,137.69, 15,367.30 and 6,169.69 is: 8,512.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.69 : 15,367.30 = 6,169.69 : x
  2. Step 2: Convert to fraction form
    11,137.69/15,367.30 = 6,169.69/x
  3. Step 3: Cross multiply
    11,137.69x = 15,367.30 × 6,169.69
  4. Step 4: Simplify right side
    11,137.69x = 94,811,477.14
  5. Step 5: Solve for x
    x = 94,811,477.14/11,137.69
  6. Step 6: Final answer
    x = 8,512.67

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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.