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Finding the Fourth Proportional to 92,811.80, 139,217.70 and 33,647.40

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Solution

The fourth proportional to 92,811.80, 139,217.70 and 33,647.40 is: 50,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,811.80 : 139,217.70 = 33,647.40 : x
  2. Step 2: Convert to fraction form
    92,811.80/139,217.70 = 33,647.40/x
  3. Step 3: Cross multiply
    92,811.80x = 139,217.70 × 33,647.40
  4. Step 4: Simplify right side
    92,811.80x = 4,684,313,638.98
  5. Step 5: Solve for x
    x = 4,684,313,638.98/92,811.80
  6. Step 6: Final answer
    x = 50,471.10

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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.