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Finding the Fourth Proportional to 223,443.36, 335,059.54 and 81,189.54

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Solution

The fourth proportional to 223,443.36, 335,059.54 and 81,189.54 is: 121,745.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,443.36 : 335,059.54 = 81,189.54 : x
  2. Step 2: Convert to fraction form
    223,443.36/335,059.54 = 81,189.54/x
  3. Step 3: Cross multiply
    223,443.36x = 335,059.54 × 81,189.54
  4. Step 4: Simplify right side
    223,443.36x = 27,203,329,722.24
  5. Step 5: Solve for x
    x = 27,203,329,722.24/223,443.36
  6. Step 6: Final answer
    x = 121,745.98

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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.