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Finding the Fourth Proportional to 192,620.91, 265,802.41 and 107,721.57

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Solution

The fourth proportional to 192,620.91, 265,802.41 and 107,721.57 is: 148,647.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,620.91 : 265,802.41 = 107,721.57 : x
  2. Step 2: Convert to fraction form
    192,620.91/265,802.41 = 107,721.57/x
  3. Step 3: Cross multiply
    192,620.91x = 265,802.41 × 107,721.57
  4. Step 4: Simplify right side
    192,620.91x = 28,632,652,914.98
  5. Step 5: Solve for x
    x = 28,632,652,914.98/192,620.91
  6. Step 6: Final answer
    x = 148,647.69

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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.