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Finding the Fourth Proportional to 127,838.60, 191,786.70 and 39,096.20

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Solution

The fourth proportional to 127,838.60, 191,786.70 and 39,096.20 is: 58,653.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,838.60 : 191,786.70 = 39,096.20 : x
  2. Step 2: Convert to fraction form
    127,838.60/191,786.70 = 39,096.20/x
  3. Step 3: Cross multiply
    127,838.60x = 191,786.70 × 39,096.20
  4. Step 4: Simplify right side
    127,838.60x = 7,498,131,180.54
  5. Step 5: Solve for x
    x = 7,498,131,180.54/127,838.60
  6. Step 6: Final answer
    x = 58,653.11

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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.