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Finding the Fourth Proportional to 74,306, 111,450.04 and 18,902.48

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Solution

The fourth proportional to 74,306, 111,450.04 and 18,902.48 is: 28,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,306 : 111,450.04 = 18,902.48 : x
  2. Step 2: Convert to fraction form
    74,306/111,450.04 = 18,902.48/x
  3. Step 3: Cross multiply
    74,306x = 111,450.04 × 18,902.48
  4. Step 4: Simplify right side
    74,306x = 2,106,682,152.10
  5. Step 5: Solve for x
    x = 2,106,682,152.10/74,306
  6. Step 6: Final answer
    x = 28,351.44

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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.