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Finding the Fourth Proportional to 8,231.16, 11,360.68 and 5,579.42

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Solution

The fourth proportional to 8,231.16, 11,360.68 and 5,579.42 is: 7,700.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.16 : 11,360.68 = 5,579.42 : x
  2. Step 2: Convert to fraction form
    8,231.16/11,360.68 = 5,579.42/x
  3. Step 3: Cross multiply
    8,231.16x = 11,360.68 × 5,579.42
  4. Step 4: Simplify right side
    8,231.16x = 63,386,019.66
  5. Step 5: Solve for x
    x = 63,386,019.66/8,231.16
  6. Step 6: Final answer
    x = 7,700.74

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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.