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Finding the Fourth Proportional to 111,633.41, 167,449.28 and 45,072.51

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Solution

The fourth proportional to 111,633.41, 167,449.28 and 45,072.51 is: 67,608.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,633.41 : 167,449.28 = 45,072.51 : x
  2. Step 2: Convert to fraction form
    111,633.41/167,449.28 = 45,072.51/x
  3. Step 3: Cross multiply
    111,633.41x = 167,449.28 × 45,072.51
  4. Step 4: Simplify right side
    111,633.41x = 7,547,359,121.93
  5. Step 5: Solve for x
    x = 7,547,359,121.93/111,633.41
  6. Step 6: Final answer
    x = 67,608.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.