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Finding the Fourth Proportional to 111,869.33, 154,379.66 and 61,568.33

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Solution

The fourth proportional to 111,869.33, 154,379.66 and 61,568.33 is: 84,964.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,869.33 : 154,379.66 = 61,568.33 : x
  2. Step 2: Convert to fraction form
    111,869.33/154,379.66 = 61,568.33/x
  3. Step 3: Cross multiply
    111,869.33x = 154,379.66 × 61,568.33
  4. Step 4: Simplify right side
    111,869.33x = 9,504,896,772.43
  5. Step 5: Solve for x
    x = 9,504,896,772.43/111,869.33
  6. Step 6: Final answer
    x = 84,964.28

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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.