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Finding the Fourth Proportional to 118,794.86, 163,936.91 and 71,048.21

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Solution

The fourth proportional to 118,794.86, 163,936.91 and 71,048.21 is: 98,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.86 : 163,936.91 = 71,048.21 : x
  2. Step 2: Convert to fraction form
    118,794.86/163,936.91 = 71,048.21/x
  3. Step 3: Cross multiply
    118,794.86x = 163,936.91 × 71,048.21
  4. Step 4: Simplify right side
    118,794.86x = 11,647,422,833.51
  5. Step 5: Solve for x
    x = 11,647,422,833.51/118,794.86
  6. Step 6: Final answer
    x = 98,046.53

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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.