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Finding the Fourth Proportional to 117,015.97, 175,413.24 and 72,064.97

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Solution

The fourth proportional to 117,015.97, 175,413.24 and 72,064.97 is: 108,029.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,015.97 : 175,413.24 = 72,064.97 : x
  2. Step 2: Convert to fraction form
    117,015.97/175,413.24 = 72,064.97/x
  3. Step 3: Cross multiply
    117,015.97x = 175,413.24 × 72,064.97
  4. Step 4: Simplify right side
    117,015.97x = 12,641,149,878.20
  5. Step 5: Solve for x
    x = 12,641,149,878.20/117,015.97
  6. Step 6: Final answer
    x = 108,029.27

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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.