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Finding the Fourth Proportional to 74,467.20, 111,409.20 and 48,223.20

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Solution

The fourth proportional to 74,467.20, 111,409.20 and 48,223.20 is: 72,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,467.20 : 111,409.20 = 48,223.20 : x
  2. Step 2: Convert to fraction form
    74,467.20/111,409.20 = 48,223.20/x
  3. Step 3: Cross multiply
    74,467.20x = 111,409.20 × 48,223.20
  4. Step 4: Simplify right side
    74,467.20x = 5,372,508,133.44
  5. Step 5: Solve for x
    x = 5,372,508,133.44/74,467.20
  6. Step 6: Final answer
    x = 72,145.97

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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.