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Finding the Fourth Proportional to 139,374.44, 192,337.23 and 82,015.98

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Solution

The fourth proportional to 139,374.44, 192,337.23 and 82,015.98 is: 113,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,374.44 : 192,337.23 = 82,015.98 : x
  2. Step 2: Convert to fraction form
    139,374.44/192,337.23 = 82,015.98/x
  3. Step 3: Cross multiply
    139,374.44x = 192,337.23 × 82,015.98
  4. Step 4: Simplify right side
    139,374.44x = 15,774,726,408.94
  5. Step 5: Solve for x
    x = 15,774,726,408.94/139,374.44
  6. Step 6: Final answer
    x = 113,182.35

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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.