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Finding the Fourth Proportional to 92,790.59, 139,255.86 and 67,894.87

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Solution

The fourth proportional to 92,790.59, 139,255.86 and 67,894.87 is: 101,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,790.59 : 139,255.86 = 67,894.87 : x
  2. Step 2: Convert to fraction form
    92,790.59/139,255.86 = 67,894.87/x
  3. Step 3: Cross multiply
    92,790.59x = 139,255.86 × 67,894.87
  4. Step 4: Simplify right side
    92,790.59x = 9,454,758,163.30
  5. Step 5: Solve for x
    x = 9,454,758,163.30/92,790.59
  6. Step 6: Final answer
    x = 101,893.50

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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.