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Finding the Fourth Proportional to 90,843.56, 125,363.22 and 50,556.64

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Solution

The fourth proportional to 90,843.56, 125,363.22 and 50,556.64 is: 69,767.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,843.56 : 125,363.22 = 50,556.64 : x
  2. Step 2: Convert to fraction form
    90,843.56/125,363.22 = 50,556.64/x
  3. Step 3: Cross multiply
    90,843.56x = 125,363.22 × 50,556.64
  4. Step 4: Simplify right side
    90,843.56x = 6,337,943,182.78
  5. Step 5: Solve for x
    x = 6,337,943,182.78/90,843.56
  6. Step 6: Final answer
    x = 69,767.67

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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.