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Finding the Fourth Proportional to 79,285.29, 109,413.54 and 43,474.47

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Solution

The fourth proportional to 79,285.29, 109,413.54 and 43,474.47 is: 59,994.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,285.29 : 109,413.54 = 43,474.47 : x
  2. Step 2: Convert to fraction form
    79,285.29/109,413.54 = 43,474.47/x
  3. Step 3: Cross multiply
    79,285.29x = 109,413.54 × 43,474.47
  4. Step 4: Simplify right side
    79,285.29x = 4,756,695,662.32
  5. Step 5: Solve for x
    x = 4,756,695,662.32/79,285.29
  6. Step 6: Final answer
    x = 59,994.68

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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.