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Finding the Fourth Proportional to 111,713.27, 154,147.12 and 66,374.47

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Solution

The fourth proportional to 111,713.27, 154,147.12 and 66,374.47 is: 91,586.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,713.27 : 154,147.12 = 66,374.47 : x
  2. Step 2: Convert to fraction form
    111,713.27/154,147.12 = 66,374.47/x
  3. Step 3: Cross multiply
    111,713.27x = 154,147.12 × 66,374.47
  4. Step 4: Simplify right side
    111,713.27x = 10,231,433,392.03
  5. Step 5: Solve for x
    x = 10,231,433,392.03/111,713.27
  6. Step 6: Final answer
    x = 91,586.55

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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.