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Finding the Fourth Proportional to 98,763.67, 148,163.96 and 39,603.97

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Solution

The fourth proportional to 98,763.67, 148,163.96 and 39,603.97 is: 59,413.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,763.67 : 148,163.96 = 39,603.97 : x
  2. Step 2: Convert to fraction form
    98,763.67/148,163.96 = 39,603.97/x
  3. Step 3: Cross multiply
    98,763.67x = 148,163.96 × 39,603.97
  4. Step 4: Simplify right side
    98,763.67x = 5,867,881,026.92
  5. Step 5: Solve for x
    x = 5,867,881,026.92/98,763.67
  6. Step 6: Final answer
    x = 59,413.36

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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.