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Finding the Fourth Proportional to 19,583.98, 29,413.04 and 12,239.98

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Solution

The fourth proportional to 19,583.98, 29,413.04 and 12,239.98 is: 18,383.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,583.98 : 29,413.04 = 12,239.98 : x
  2. Step 2: Convert to fraction form
    19,583.98/29,413.04 = 12,239.98/x
  3. Step 3: Cross multiply
    19,583.98x = 29,413.04 × 12,239.98
  4. Step 4: Simplify right side
    19,583.98x = 360,015,021.34
  5. Step 5: Solve for x
    x = 360,015,021.34/19,583.98
  6. Step 6: Final answer
    x = 18,383.14

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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.