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Finding the Fourth Proportional to 11,392.36, 15,721.86 and 6,676.36

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Solution

The fourth proportional to 11,392.36, 15,721.86 and 6,676.36 is: 9,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.36 : 15,721.86 = 6,676.36 : x
  2. Step 2: Convert to fraction form
    11,392.36/15,721.86 = 6,676.36/x
  3. Step 3: Cross multiply
    11,392.36x = 15,721.86 × 6,676.36
  4. Step 4: Simplify right side
    11,392.36x = 104,964,797.23
  5. Step 5: Solve for x
    x = 104,964,797.23/11,392.36
  6. Step 6: Final answer
    x = 9,213.61

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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.