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Finding the Fourth Proportional to 139,652.52, 192,724.59 and 75,994.44

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Solution

The fourth proportional to 139,652.52, 192,724.59 and 75,994.44 is: 104,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,652.52 : 192,724.59 = 75,994.44 : x
  2. Step 2: Convert to fraction form
    139,652.52/192,724.59 = 75,994.44/x
  3. Step 3: Cross multiply
    139,652.52x = 192,724.59 × 75,994.44
  4. Step 4: Simplify right side
    139,652.52x = 14,645,997,291.28
  5. Step 5: Solve for x
    x = 14,645,997,291.28/139,652.52
  6. Step 6: Final answer
    x = 104,874.57

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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.