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Finding the Fourth Proportional to 111,806.79, 167,721.12 and 41,669.70

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Solution

The fourth proportional to 111,806.79, 167,721.12 and 41,669.70 is: 62,508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.79 : 167,721.12 = 41,669.70 : x
  2. Step 2: Convert to fraction form
    111,806.79/167,721.12 = 41,669.70/x
  3. Step 3: Cross multiply
    111,806.79x = 167,721.12 × 41,669.70
  4. Step 4: Simplify right side
    111,806.79x = 6,988,888,754.06
  5. Step 5: Solve for x
    x = 6,988,888,754.06/111,806.79
  6. Step 6: Final answer
    x = 62,508.63

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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.