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Finding the Fourth Proportional to 88,701.75, 122,413.41 and 50,978.43

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Solution

The fourth proportional to 88,701.75, 122,413.41 and 50,978.43 is: 70,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,701.75 : 122,413.41 = 50,978.43 : x
  2. Step 2: Convert to fraction form
    88,701.75/122,413.41 = 50,978.43/x
  3. Step 3: Cross multiply
    88,701.75x = 122,413.41 × 50,978.43
  4. Step 4: Simplify right side
    88,701.75x = 6,240,443,452.75
  5. Step 5: Solve for x
    x = 6,240,443,452.75/88,701.75
  6. Step 6: Final answer
    x = 70,353.10

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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.