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Finding the Fourth Proportional to 40,671.66, 60,993.21 and 12,200.13

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Solution

The fourth proportional to 40,671.66, 60,993.21 and 12,200.13 is: 18,295.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,671.66 : 60,993.21 = 12,200.13 : x
  2. Step 2: Convert to fraction form
    40,671.66/60,993.21 = 12,200.13/x
  3. Step 3: Cross multiply
    40,671.66x = 60,993.21 × 12,200.13
  4. Step 4: Simplify right side
    40,671.66x = 744,124,969.61
  5. Step 5: Solve for x
    x = 744,124,969.61/40,671.66
  6. Step 6: Final answer
    x = 18,295.91

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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.