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Finding the Fourth Proportional to 8,076.15, 12,115.98 and 7,259.67

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Solution

The fourth proportional to 8,076.15, 12,115.98 and 7,259.67 is: 10,891.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,076.15 : 12,115.98 = 7,259.67 : x
  2. Step 2: Convert to fraction form
    8,076.15/12,115.98 = 7,259.67/x
  3. Step 3: Cross multiply
    8,076.15x = 12,115.98 × 7,259.67
  4. Step 4: Simplify right side
    8,076.15x = 87,958,016.53
  5. Step 5: Solve for x
    x = 87,958,016.53/8,076.15
  6. Step 6: Final answer
    x = 10,891.08

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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.