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Finding the Fourth Proportional to 141,068, 194,673.87 and 80,639.98

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Solution

The fourth proportional to 141,068, 194,673.87 and 80,639.98 is: 111,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,068 : 194,673.87 = 80,639.98 : x
  2. Step 2: Convert to fraction form
    141,068/194,673.87 = 80,639.98/x
  3. Step 3: Cross multiply
    141,068x = 194,673.87 × 80,639.98
  4. Step 4: Simplify right side
    141,068x = 15,698,496,983.32
  5. Step 5: Solve for x
    x = 15,698,496,983.32/141,068
  6. Step 6: Final answer
    x = 111,283.19

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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.