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Finding the Fourth Proportional to 92,968.29, 139,418.69 and 50,879.48

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Solution

The fourth proportional to 92,968.29, 139,418.69 and 50,879.48 is: 76,300.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,968.29 : 139,418.69 = 50,879.48 : x
  2. Step 2: Convert to fraction form
    92,968.29/139,418.69 = 50,879.48/x
  3. Step 3: Cross multiply
    92,968.29x = 139,418.69 × 50,879.48
  4. Step 4: Simplify right side
    92,968.29x = 7,093,549,497.99
  5. Step 5: Solve for x
    x = 7,093,549,497.99/92,968.29
  6. Step 6: Final answer
    x = 76,300.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.