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Finding the Fourth Proportional to 11,212.92, 15,473.39 and 6,739.13

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Solution

The fourth proportional to 11,212.92, 15,473.39 and 6,739.13 is: 9,299.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.92 : 15,473.39 = 6,739.13 : x
  2. Step 2: Convert to fraction form
    11,212.92/15,473.39 = 6,739.13/x
  3. Step 3: Cross multiply
    11,212.92x = 15,473.39 × 6,739.13
  4. Step 4: Simplify right side
    11,212.92x = 104,277,186.75
  5. Step 5: Solve for x
    x = 104,277,186.75/11,212.92
  6. Step 6: Final answer
    x = 9,299.74

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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.