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Finding the Fourth Proportional to 38,749.60, 57,978.60 and 25,627.60

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Solution

The fourth proportional to 38,749.60, 57,978.60 and 25,627.60 is: 38,344.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,749.60 : 57,978.60 = 25,627.60 : x
  2. Step 2: Convert to fraction form
    38,749.60/57,978.60 = 25,627.60/x
  3. Step 3: Cross multiply
    38,749.60x = 57,978.60 × 25,627.60
  4. Step 4: Simplify right side
    38,749.60x = 1,485,852,369.36
  5. Step 5: Solve for x
    x = 1,485,852,369.36/38,749.60
  6. Step 6: Final answer
    x = 38,344.97

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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.