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Finding the Fourth Proportional to 223,873.20, 335,720.70 and 74,071.80

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Solution

The fourth proportional to 223,873.20, 335,720.70 and 74,071.80 is: 111,078.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,873.20 : 335,720.70 = 74,071.80 : x
  2. Step 2: Convert to fraction form
    223,873.20/335,720.70 = 74,071.80/x
  3. Step 3: Cross multiply
    223,873.20x = 335,720.70 × 74,071.80
  4. Step 4: Simplify right side
    223,873.20x = 24,867,436,546.26
  5. Step 5: Solve for x
    x = 24,867,436,546.26/223,873.20
  6. Step 6: Final answer
    x = 111,078.22

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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.