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Finding the Fourth Proportional to 141,051.86, 194,651.56 and 80,623.80

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Solution

The fourth proportional to 141,051.86, 194,651.56 and 80,623.80 is: 111,260.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,051.86 : 194,651.56 = 80,623.80 : x
  2. Step 2: Convert to fraction form
    141,051.86/194,651.56 = 80,623.80/x
  3. Step 3: Cross multiply
    141,051.86x = 194,651.56 × 80,623.80
  4. Step 4: Simplify right side
    141,051.86x = 15,693,548,443.13
  5. Step 5: Solve for x
    x = 15,693,548,443.13/141,051.86
  6. Step 6: Final answer
    x = 111,260.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.