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Finding the Fourth Proportional to 74,645.66, 111,939.32 and 33,063.50

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Solution

The fourth proportional to 74,645.66, 111,939.32 and 33,063.50 is: 49,582.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,645.66 : 111,939.32 = 33,063.50 : x
  2. Step 2: Convert to fraction form
    74,645.66/111,939.32 = 33,063.50/x
  3. Step 3: Cross multiply
    74,645.66x = 111,939.32 × 33,063.50
  4. Step 4: Simplify right side
    74,645.66x = 3,701,105,706.82
  5. Step 5: Solve for x
    x = 3,701,105,706.82/74,645.66
  6. Step 6: Final answer
    x = 49,582.33

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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.