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Finding the Fourth Proportional to 91,940.63, 137,910.94 and 29,611.13

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Solution

The fourth proportional to 91,940.63, 137,910.94 and 29,611.13 is: 44,416.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,940.63 : 137,910.94 = 29,611.13 : x
  2. Step 2: Convert to fraction form
    91,940.63/137,910.94 = 29,611.13/x
  3. Step 3: Cross multiply
    91,940.63x = 137,910.94 × 29,611.13
  4. Step 4: Simplify right side
    91,940.63x = 4,083,698,009.18
  5. Step 5: Solve for x
    x = 4,083,698,009.18/91,940.63
  6. Step 6: Final answer
    x = 44,416.69

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1.5x scale

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.