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Finding the Fourth Proportional to 179,712.32, 269,620.32 and 74,511.68

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Solution

The fourth proportional to 179,712.32, 269,620.32 and 74,511.68 is: 111,789.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,712.32 : 269,620.32 = 74,511.68 : x
  2. Step 2: Convert to fraction form
    179,712.32/269,620.32 = 74,511.68/x
  3. Step 3: Cross multiply
    179,712.32x = 269,620.32 × 74,511.68
  4. Step 4: Simplify right side
    179,712.32x = 20,089,863,005.34
  5. Step 5: Solve for x
    x = 20,089,863,005.34/179,712.32
  6. Step 6: Final answer
    x = 111,789.01

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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.