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Finding the Fourth Proportional to 141,819.26, 212,767.76 and 74,355.77

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Solution

The fourth proportional to 141,819.26, 212,767.76 and 74,355.77 is: 111,554.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,819.26 : 212,767.76 = 74,355.77 : x
  2. Step 2: Convert to fraction form
    141,819.26/212,767.76 = 74,355.77/x
  3. Step 3: Cross multiply
    141,819.26x = 212,767.76 × 74,355.77
  4. Step 4: Simplify right side
    141,819.26x = 15,820,511,343.78
  5. Step 5: Solve for x
    x = 15,820,511,343.78/141,819.26
  6. Step 6: Final answer
    x = 111,554.04

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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.