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Finding the Fourth Proportional to 118,617.60, 178,023.60 and 114,729.60

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Solution

The fourth proportional to 118,617.60, 178,023.60 and 114,729.60 is: 172,188.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,617.60 : 178,023.60 = 114,729.60 : x
  2. Step 2: Convert to fraction form
    118,617.60/178,023.60 = 114,729.60/x
  3. Step 3: Cross multiply
    118,617.60x = 178,023.60 × 114,729.60
  4. Step 4: Simplify right side
    118,617.60x = 20,424,576,418.56
  5. Step 5: Solve for x
    x = 20,424,576,418.56/118,617.60
  6. Step 6: Final answer
    x = 172,188.41

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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.