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Finding the Fourth Proportional to 11,905.15, 17,859.06 and 4,884.88

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Solution

The fourth proportional to 11,905.15, 17,859.06 and 4,884.88 is: 7,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.15 : 17,859.06 = 4,884.88 : x
  2. Step 2: Convert to fraction form
    11,905.15/17,859.06 = 4,884.88/x
  3. Step 3: Cross multiply
    11,905.15x = 17,859.06 × 4,884.88
  4. Step 4: Simplify right side
    11,905.15x = 87,239,365.01
  5. Step 5: Solve for x
    x = 87,239,365.01/11,905.15
  6. Step 6: Final answer
    x = 7,327.87

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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.