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Finding the Fourth Proportional to 89,199.80, 133,605.30 and 73,647.80

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Solution

The fourth proportional to 89,199.80, 133,605.30 and 73,647.80 is: 110,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,199.80 : 133,605.30 = 73,647.80 : x
  2. Step 2: Convert to fraction form
    89,199.80/133,605.30 = 73,647.80/x
  3. Step 3: Cross multiply
    89,199.80x = 133,605.30 × 73,647.80
  4. Step 4: Simplify right side
    89,199.80x = 9,839,736,413.34
  5. Step 5: Solve for x
    x = 9,839,736,413.34/89,199.80
  6. Step 6: Final answer
    x = 110,311.19

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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.