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Finding the Fourth Proportional to 221,361.48, 332,268.21 and 162,020.88

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Solution

The fourth proportional to 221,361.48, 332,268.21 and 162,020.88 is: 243,196.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,361.48 : 332,268.21 = 162,020.88 : x
  2. Step 2: Convert to fraction form
    221,361.48/332,268.21 = 162,020.88/x
  3. Step 3: Cross multiply
    221,361.48x = 332,268.21 × 162,020.88
  4. Step 4: Simplify right side
    221,361.48x = 53,834,387,780.22
  5. Step 5: Solve for x
    x = 53,834,387,780.22/221,361.48
  6. Step 6: Final answer
    x = 243,196.73

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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.