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Finding the Fourth Proportional to 40,447.31, 60,629.31 and 15,480.54

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Solution

The fourth proportional to 40,447.31, 60,629.31 and 15,480.54 is: 23,204.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,447.31 : 60,629.31 = 15,480.54 : x
  2. Step 2: Convert to fraction form
    40,447.31/60,629.31 = 15,480.54/x
  3. Step 3: Cross multiply
    40,447.31x = 60,629.31 × 15,480.54
  4. Step 4: Simplify right side
    40,447.31x = 938,574,458.63
  5. Step 5: Solve for x
    x = 938,574,458.63/40,447.31
  6. Step 6: Final answer
    x = 23,204.87

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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.