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Finding the Fourth Proportional to 8,912.70, 12,297.63 and 5,375.85

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Solution

The fourth proportional to 8,912.70, 12,297.63 and 5,375.85 is: 7,417.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.70 : 12,297.63 = 5,375.85 : x
  2. Step 2: Convert to fraction form
    8,912.70/12,297.63 = 5,375.85/x
  3. Step 3: Cross multiply
    8,912.70x = 12,297.63 × 5,375.85
  4. Step 4: Simplify right side
    8,912.70x = 66,110,214.24
  5. Step 5: Solve for x
    x = 66,110,214.24/8,912.70
  6. Step 6: Final answer
    x = 7,417.53

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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.