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Finding the Fourth Proportional to 178,653.21, 267,629.46 and 103,615.73

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Solution

The fourth proportional to 178,653.21, 267,629.46 and 103,615.73 is: 155,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,653.21 : 267,629.46 = 103,615.73 : x
  2. Step 2: Convert to fraction form
    178,653.21/267,629.46 = 103,615.73/x
  3. Step 3: Cross multiply
    178,653.21x = 267,629.46 × 103,615.73
  4. Step 4: Simplify right side
    178,653.21x = 27,730,620,529.26
  5. Step 5: Solve for x
    x = 27,730,620,529.26/178,653.21
  6. Step 6: Final answer
    x = 155,220.39

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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.