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Finding the Fourth Proportional to 68,940.94, 103,428.04 and 23,955.74

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Solution

The fourth proportional to 68,940.94, 103,428.04 and 23,955.74 is: 35,939.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,940.94 : 103,428.04 = 23,955.74 : x
  2. Step 2: Convert to fraction form
    68,940.94/103,428.04 = 23,955.74/x
  3. Step 3: Cross multiply
    68,940.94x = 103,428.04 × 23,955.74
  4. Step 4: Simplify right side
    68,940.94x = 2,477,695,234.95
  5. Step 5: Solve for x
    x = 2,477,695,234.95/68,940.94
  6. Step 6: Final answer
    x = 35,939.39

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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.