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Finding the Fourth Proportional to 221,716.40, 332,574.60 and 204,609.20

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Solution

The fourth proportional to 221,716.40, 332,574.60 and 204,609.20 is: 306,913.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,716.40 : 332,574.60 = 204,609.20 : x
  2. Step 2: Convert to fraction form
    221,716.40/332,574.60 = 204,609.20/x
  3. Step 3: Cross multiply
    221,716.40x = 332,574.60 × 204,609.20
  4. Step 4: Simplify right side
    221,716.40x = 68,047,822,846.32
  5. Step 5: Solve for x
    x = 68,047,822,846.32/221,716.40
  6. Step 6: Final answer
    x = 306,913.80

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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.