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Finding the Fourth Proportional to 11,811.62, 16,299.98 and 6,433.65

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Solution

The fourth proportional to 11,811.62, 16,299.98 and 6,433.65 is: 8,878.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.62 : 16,299.98 = 6,433.65 : x
  2. Step 2: Convert to fraction form
    11,811.62/16,299.98 = 6,433.65/x
  3. Step 3: Cross multiply
    11,811.62x = 16,299.98 × 6,433.65
  4. Step 4: Simplify right side
    11,811.62x = 104,868,440.32
  5. Step 5: Solve for x
    x = 104,868,440.32/11,811.62
  6. Step 6: Final answer
    x = 8,878.41

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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.