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Finding the Fourth Proportional to 10,961.75, 16,448.03 and 5,118.77

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Solution

The fourth proportional to 10,961.75, 16,448.03 and 5,118.77 is: 7,680.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.75 : 16,448.03 = 5,118.77 : x
  2. Step 2: Convert to fraction form
    10,961.75/16,448.03 = 5,118.77/x
  3. Step 3: Cross multiply
    10,961.75x = 16,448.03 × 5,118.77
  4. Step 4: Simplify right side
    10,961.75x = 84,193,574.69
  5. Step 5: Solve for x
    x = 84,193,574.69/10,961.75
  6. Step 6: Final answer
    x = 7,680.67

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1.5x scale

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.