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Finding the Fourth Proportional to 111,806.44, 154,295.26 and 61,505.44

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Solution

The fourth proportional to 111,806.44, 154,295.26 and 61,505.44 is: 84,878.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.44 : 154,295.26 = 61,505.44 : x
  2. Step 2: Convert to fraction form
    111,806.44/154,295.26 = 61,505.44/x
  3. Step 3: Cross multiply
    111,806.44x = 154,295.26 × 61,505.44
  4. Step 4: Simplify right side
    111,806.44x = 9,489,997,856.21
  5. Step 5: Solve for x
    x = 9,489,997,856.21/111,806.44
  6. Step 6: Final answer
    x = 84,878.81

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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.