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Finding the Fourth Proportional to 71,737.20, 107,476.20 and 61,369.20

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Solution

The fourth proportional to 71,737.20, 107,476.20 and 61,369.20 is: 91,942.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,737.20 : 107,476.20 = 61,369.20 : x
  2. Step 2: Convert to fraction form
    71,737.20/107,476.20 = 61,369.20/x
  3. Step 3: Cross multiply
    71,737.20x = 107,476.20 × 61,369.20
  4. Step 4: Simplify right side
    71,737.20x = 6,595,728,413.04
  5. Step 5: Solve for x
    x = 6,595,728,413.04/71,737.20
  6. Step 6: Final answer
    x = 91,942.93

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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.