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Finding the Fourth Proportional to 111,863.44, 154,371.55 and 61,562.44

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Solution

The fourth proportional to 111,863.44, 154,371.55 and 61,562.44 is: 84,956.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,863.44 : 154,371.55 = 61,562.44 : x
  2. Step 2: Convert to fraction form
    111,863.44/154,371.55 = 61,562.44/x
  3. Step 3: Cross multiply
    111,863.44x = 154,371.55 × 61,562.44
  4. Step 4: Simplify right side
    111,863.44x = 9,503,489,284.58
  5. Step 5: Solve for x
    x = 9,503,489,284.58/111,863.44
  6. Step 6: Final answer
    x = 84,956.17

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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.