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Finding the Fourth Proportional to 8,865.68, 12,231.54 and 5,086.22

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Solution

The fourth proportional to 8,865.68, 12,231.54 and 5,086.22 is: 7,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.68 : 12,231.54 = 5,086.22 : x
  2. Step 2: Convert to fraction form
    8,865.68/12,231.54 = 5,086.22/x
  3. Step 3: Cross multiply
    8,865.68x = 12,231.54 × 5,086.22
  4. Step 4: Simplify right side
    8,865.68x = 62,212,242.22
  5. Step 5: Solve for x
    x = 62,212,242.22/8,865.68
  6. Step 6: Final answer
    x = 7,017.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.