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Finding the Fourth Proportional to 161,091.78, 222,306.89 and 89,469.96

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Solution

The fourth proportional to 161,091.78, 222,306.89 and 89,469.96 is: 123,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,091.78 : 222,306.89 = 89,469.96 : x
  2. Step 2: Convert to fraction form
    161,091.78/222,306.89 = 89,469.96/x
  3. Step 3: Cross multiply
    161,091.78x = 222,306.89 × 89,469.96
  4. Step 4: Simplify right side
    161,091.78x = 19,889,788,556.02
  5. Step 5: Solve for x
    x = 19,889,788,556.02/161,091.78
  6. Step 6: Final answer
    x = 123,468.67

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1.5x scale

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.