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Finding the Fourth Proportional to 73,981.81, 111,000.66 and 44,420.25

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Solution

The fourth proportional to 73,981.81, 111,000.66 and 44,420.25 is: 66,647.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,981.81 : 111,000.66 = 44,420.25 : x
  2. Step 2: Convert to fraction form
    73,981.81/111,000.66 = 44,420.25/x
  3. Step 3: Cross multiply
    73,981.81x = 111,000.66 × 44,420.25
  4. Step 4: Simplify right side
    73,981.81x = 4,930,677,067.37
  5. Step 5: Solve for x
    x = 4,930,677,067.37/73,981.81
  6. Step 6: Final answer
    x = 66,647.15

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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.