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Finding the Fourth Proportional to 111,855.56, 154,360.69 and 61,554.56

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Solution

The fourth proportional to 111,855.56, 154,360.69 and 61,554.56 is: 84,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,855.56 : 154,360.69 = 61,554.56 : x
  2. Step 2: Convert to fraction form
    111,855.56/154,360.69 = 61,554.56/x
  3. Step 3: Cross multiply
    111,855.56x = 154,360.69 × 61,554.56
  4. Step 4: Simplify right side
    111,855.56x = 9,501,603,582.44
  5. Step 5: Solve for x
    x = 9,501,603,582.44/111,855.56
  6. Step 6: Final answer
    x = 84,945.30

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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.