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Finding the Fourth Proportional to 221,783.07, 332,806.37 and 81,640.11

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Solution

The fourth proportional to 221,783.07, 332,806.37 and 81,640.11 is: 122,508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,783.07 : 332,806.37 = 81,640.11 : x
  2. Step 2: Convert to fraction form
    221,783.07/332,806.37 = 81,640.11/x
  3. Step 3: Cross multiply
    221,783.07x = 332,806.37 × 81,640.11
  4. Step 4: Simplify right side
    221,783.07x = 27,170,348,247.30
  5. Step 5: Solve for x
    x = 27,170,348,247.30/221,783.07
  6. Step 6: Final answer
    x = 122,508.67

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1.5x scale

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.