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Finding the Fourth Proportional to 141,299.88, 194,993.28 and 80,870.28

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Solution

The fourth proportional to 141,299.88, 194,993.28 and 80,870.28 is: 111,600.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,299.88 : 194,993.28 = 80,870.28 : x
  2. Step 2: Convert to fraction form
    141,299.88/194,993.28 = 80,870.28/x
  3. Step 3: Cross multiply
    141,299.88x = 194,993.28 × 80,870.28
  4. Step 4: Simplify right side
    141,299.88x = 15,769,161,151.72
  5. Step 5: Solve for x
    x = 15,769,161,151.72/141,299.88
  6. Step 6: Final answer
    x = 111,600.67

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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.