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Finding the Fourth Proportional to 118,937.76, 178,413.36 and 52,408.96

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Solution

The fourth proportional to 118,937.76, 178,413.36 and 52,408.96 is: 78,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,937.76 : 178,413.36 = 52,408.96 : x
  2. Step 2: Convert to fraction form
    118,937.76/178,413.36 = 52,408.96/x
  3. Step 3: Cross multiply
    118,937.76x = 178,413.36 × 52,408.96
  4. Step 4: Simplify right side
    118,937.76x = 9,350,458,647.71
  5. Step 5: Solve for x
    x = 9,350,458,647.71/118,937.76
  6. Step 6: Final answer
    x = 78,616.40

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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.