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Finding the Fourth Proportional to 139,798.36, 192,963.90 and 95,112.28

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Solution

The fourth proportional to 139,798.36, 192,963.90 and 95,112.28 is: 131,283.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,798.36 : 192,963.90 = 95,112.28 : x
  2. Step 2: Convert to fraction form
    139,798.36/192,963.90 = 95,112.28/x
  3. Step 3: Cross multiply
    139,798.36x = 192,963.90 × 95,112.28
  4. Step 4: Simplify right side
    139,798.36x = 18,353,236,486.69
  5. Step 5: Solve for x
    x = 18,353,236,486.69/139,798.36
  6. Step 6: Final answer
    x = 131,283.63

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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.