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Finding the Fourth Proportional to 161,408.88, 241,808.04 and 91,338.48

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Solution

The fourth proportional to 161,408.88, 241,808.04 and 91,338.48 is: 136,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,408.88 : 241,808.04 = 91,338.48 : x
  2. Step 2: Convert to fraction form
    161,408.88/241,808.04 = 91,338.48/x
  3. Step 3: Cross multiply
    161,408.88x = 241,808.04 × 91,338.48
  4. Step 4: Simplify right side
    161,408.88x = 22,086,378,825.38
  5. Step 5: Solve for x
    x = 22,086,378,825.38/161,408.88
  6. Step 6: Final answer
    x = 136,834.97

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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.