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Finding the Fourth Proportional to 111,757.41, 154,162.11 and 66,450.01

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Solution

The fourth proportional to 111,757.41, 154,162.11 and 66,450.01 is: 91,663.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,757.41 : 154,162.11 = 66,450.01 : x
  2. Step 2: Convert to fraction form
    111,757.41/154,162.11 = 66,450.01/x
  3. Step 3: Cross multiply
    111,757.41x = 154,162.11 × 66,450.01
  4. Step 4: Simplify right side
    111,757.41x = 10,244,073,751.12
  5. Step 5: Solve for x
    x = 10,244,073,751.12/111,757.41
  6. Step 6: Final answer
    x = 91,663.49

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Why These Related Problems?

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