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Finding the Fourth Proportional to 92,806.20, 139,209.30 and 33,643.80

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Solution

The fourth proportional to 92,806.20, 139,209.30 and 33,643.80 is: 50,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,806.20 : 139,209.30 = 33,643.80 : x
  2. Step 2: Convert to fraction form
    92,806.20/139,209.30 = 33,643.80/x
  3. Step 3: Cross multiply
    92,806.20x = 139,209.30 × 33,643.80
  4. Step 4: Simplify right side
    92,806.20x = 4,683,529,847.34
  5. Step 5: Solve for x
    x = 4,683,529,847.34/92,806.20
  6. Step 6: Final answer
    x = 50,465.70

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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.