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Finding the Fourth Proportional to 178,980.88, 246,994.55 and 98,413.60

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Solution

The fourth proportional to 178,980.88, 246,994.55 and 98,413.60 is: 135,811.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,980.88 : 246,994.55 = 98,413.60 : x
  2. Step 2: Convert to fraction form
    178,980.88/246,994.55 = 98,413.60/x
  3. Step 3: Cross multiply
    178,980.88x = 246,994.55 × 98,413.60
  4. Step 4: Simplify right side
    178,980.88x = 24,307,621,839.90
  5. Step 5: Solve for x
    x = 24,307,621,839.90/178,980.88
  6. Step 6: Final answer
    x = 135,811.27

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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.