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Finding the Fourth Proportional to 141,011.70, 194,583.78 and 80,570.31

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Solution

The fourth proportional to 141,011.70, 194,583.78 and 80,570.31 is: 111,179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,011.70 : 194,583.78 = 80,570.31 : x
  2. Step 2: Convert to fraction form
    141,011.70/194,583.78 = 80,570.31/x
  3. Step 3: Cross multiply
    141,011.70x = 194,583.78 × 80,570.31
  4. Step 4: Simplify right side
    141,011.70x = 15,677,675,475.57
  5. Step 5: Solve for x
    x = 15,677,675,475.57/141,011.70
  6. Step 6: Final answer
    x = 111,179.96

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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.