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Finding the Fourth Proportional to 139,194.75, 192,089.26 and 75,532.54

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Solution

The fourth proportional to 139,194.75, 192,089.26 and 75,532.54 is: 104,235.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,194.75 : 192,089.26 = 75,532.54 : x
  2. Step 2: Convert to fraction form
    139,194.75/192,089.26 = 75,532.54/x
  3. Step 3: Cross multiply
    139,194.75x = 192,089.26 × 75,532.54
  4. Step 4: Simplify right side
    139,194.75x = 14,508,989,714.52
  5. Step 5: Solve for x
    x = 14,508,989,714.52/139,194.75
  6. Step 6: Final answer
    x = 104,235.18

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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.