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Finding the Fourth Proportional to 198,644.40, 273,860.94 and 134,871.48

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Solution

The fourth proportional to 198,644.40, 273,860.94 and 134,871.48 is: 185,940.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,644.40 : 273,860.94 = 134,871.48 : x
  2. Step 2: Convert to fraction form
    198,644.40/273,860.94 = 134,871.48/x
  3. Step 3: Cross multiply
    198,644.40x = 273,860.94 × 134,871.48
  4. Step 4: Simplify right side
    198,644.40x = 36,936,030,291.99
  5. Step 5: Solve for x
    x = 36,936,030,291.99/198,644.40
  6. Step 6: Final answer
    x = 185,940.46

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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.