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Finding the Fourth Proportional to 141,995.76, 195,919.20 and 86,791.14

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Solution

The fourth proportional to 141,995.76, 195,919.20 and 86,791.14 is: 119,750.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,995.76 : 195,919.20 = 86,791.14 : x
  2. Step 2: Convert to fraction form
    141,995.76/195,919.20 = 86,791.14/x
  3. Step 3: Cross multiply
    141,995.76x = 195,919.20 × 86,791.14
  4. Step 4: Simplify right side
    141,995.76x = 17,004,050,715.89
  5. Step 5: Solve for x
    x = 17,004,050,715.89/141,995.76
  6. Step 6: Final answer
    x = 119,750.41

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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.