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Finding the Fourth Proportional to 127,233.20, 190,936.20 and 71,073.20

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Solution

The fourth proportional to 127,233.20, 190,936.20 and 71,073.20 is: 106,658.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,233.20 : 190,936.20 = 71,073.20 : x
  2. Step 2: Convert to fraction form
    127,233.20/190,936.20 = 71,073.20/x
  3. Step 3: Cross multiply
    127,233.20x = 190,936.20 × 71,073.20
  4. Step 4: Simplify right side
    127,233.20x = 13,570,446,729.84
  5. Step 5: Solve for x
    x = 13,570,446,729.84/127,233.20
  6. Step 6: Final answer
    x = 106,658.06

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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.