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Finding the Fourth Proportional to 141,066.70, 194,672.03 and 80,638.64

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Solution

The fourth proportional to 141,066.70, 194,672.03 and 80,638.64 is: 111,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,066.70 : 194,672.03 = 80,638.64 : x
  2. Step 2: Convert to fraction form
    141,066.70/194,672.03 = 80,638.64/x
  3. Step 3: Cross multiply
    141,066.70x = 194,672.03 × 80,638.64
  4. Step 4: Simplify right side
    141,066.70x = 15,698,087,745.24
  5. Step 5: Solve for x
    x = 15,698,087,745.24/141,066.70
  6. Step 6: Final answer
    x = 111,281.31

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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.