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Finding the Fourth Proportional to 72,940.38, 109,410.60 and 23,025.52

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Solution

The fourth proportional to 72,940.38, 109,410.60 and 23,025.52 is: 34,538.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,940.38 : 109,410.60 = 23,025.52 : x
  2. Step 2: Convert to fraction form
    72,940.38/109,410.60 = 23,025.52/x
  3. Step 3: Cross multiply
    72,940.38x = 109,410.60 × 23,025.52
  4. Step 4: Simplify right side
    72,940.38x = 2,519,235,958.51
  5. Step 5: Solve for x
    x = 2,519,235,958.51/72,940.38
  6. Step 6: Final answer
    x = 34,538.29

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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.