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Finding the Fourth Proportional to 11,767.14, 16,238.88 and 6,461.64

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Solution

The fourth proportional to 11,767.14, 16,238.88 and 6,461.64 is: 8,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,767.14 : 16,238.88 = 6,461.64 : x
  2. Step 2: Convert to fraction form
    11,767.14/16,238.88 = 6,461.64/x
  3. Step 3: Cross multiply
    11,767.14x = 16,238.88 × 6,461.64
  4. Step 4: Simplify right side
    11,767.14x = 104,929,796.56
  5. Step 5: Solve for x
    x = 104,929,796.56/11,767.14
  6. Step 6: Final answer
    x = 8,917.19

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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.