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Finding the Fourth Proportional to 8,812.85, 12,164.01 and 5,453.68

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Solution

The fourth proportional to 8,812.85, 12,164.01 and 5,453.68 is: 7,527.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.85 : 12,164.01 = 5,453.68 : x
  2. Step 2: Convert to fraction form
    8,812.85/12,164.01 = 5,453.68/x
  3. Step 3: Cross multiply
    8,812.85x = 12,164.01 × 5,453.68
  4. Step 4: Simplify right side
    8,812.85x = 66,338,613.01
  5. Step 5: Solve for x
    x = 66,338,613.01/8,812.85
  6. Step 6: Final answer
    x = 7,527.49

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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.