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Finding the Fourth Proportional to 94,940.81, 142,481.30 and 45,021.08

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Solution

The fourth proportional to 94,940.81, 142,481.30 and 45,021.08 is: 67,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,940.81 : 142,481.30 = 45,021.08 : x
  2. Step 2: Convert to fraction form
    94,940.81/142,481.30 = 45,021.08/x
  3. Step 3: Cross multiply
    94,940.81x = 142,481.30 × 45,021.08
  4. Step 4: Simplify right side
    94,940.81x = 6,414,661,293.40
  5. Step 5: Solve for x
    x = 6,414,661,293.40/94,940.81
  6. Step 6: Final answer
    x = 67,564.85

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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.