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Finding the Fourth Proportional to 198,996.60, 274,404.84 and 153,681.96

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Solution

The fourth proportional to 198,996.60, 274,404.84 and 153,681.96 is: 211,918.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,996.60 : 274,404.84 = 153,681.96 : x
  2. Step 2: Convert to fraction form
    198,996.60/274,404.84 = 153,681.96/x
  3. Step 3: Cross multiply
    198,996.60x = 274,404.84 × 153,681.96
  4. Step 4: Simplify right side
    198,996.60x = 42,171,073,644.69
  5. Step 5: Solve for x
    x = 42,171,073,644.69/198,996.60
  6. Step 6: Final answer
    x = 211,918.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.