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Finding the Fourth Proportional to 221,993.76, 332,935.22 and 87,085.22

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Solution

The fourth proportional to 221,993.76, 332,935.22 and 87,085.22 is: 130,606.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,993.76 : 332,935.22 = 87,085.22 : x
  2. Step 2: Convert to fraction form
    221,993.76/332,935.22 = 87,085.22/x
  3. Step 3: Cross multiply
    221,993.76x = 332,935.22 × 87,085.22
  4. Step 4: Simplify right side
    221,993.76x = 28,993,736,879.45
  5. Step 5: Solve for x
    x = 28,993,736,879.45/221,993.76
  6. Step 6: Final answer
    x = 130,606.09

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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.