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Finding the Fourth Proportional to 92,716.86, 139,081.16 and 35,817.90

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Solution

The fourth proportional to 92,716.86, 139,081.16 and 35,817.90 is: 53,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,716.86 : 139,081.16 = 35,817.90 : x
  2. Step 2: Convert to fraction form
    92,716.86/139,081.16 = 35,817.90/x
  3. Step 3: Cross multiply
    92,716.86x = 139,081.16 × 35,817.90
  4. Step 4: Simplify right side
    92,716.86x = 4,981,595,080.76
  5. Step 5: Solve for x
    x = 4,981,595,080.76/92,716.86
  6. Step 6: Final answer
    x = 53,729.12

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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.