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Finding the Fourth Proportional to 223,216.80, 335,084.40 and 221,661.60

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Solution

The fourth proportional to 223,216.80, 335,084.40 and 221,661.60 is: 332,749.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,216.80 : 335,084.40 = 221,661.60 : x
  2. Step 2: Convert to fraction form
    223,216.80/335,084.40 = 221,661.60/x
  3. Step 3: Cross multiply
    223,216.80x = 335,084.40 × 221,661.60
  4. Step 4: Simplify right side
    223,216.80x = 74,275,344,239.04
  5. Step 5: Solve for x
    x = 74,275,344,239.04/223,216.80
  6. Step 6: Final answer
    x = 332,749.79

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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.