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Finding the Fourth Proportional to 178,469.45, 267,941.76 and 103,643.30

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Solution

The fourth proportional to 178,469.45, 267,941.76 and 103,643.30 is: 155,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,469.45 : 267,941.76 = 103,643.30 : x
  2. Step 2: Convert to fraction form
    178,469.45/267,941.76 = 103,643.30/x
  3. Step 3: Cross multiply
    178,469.45x = 267,941.76 × 103,643.30
  4. Step 4: Simplify right side
    178,469.45x = 27,770,367,097.54
  5. Step 5: Solve for x
    x = 27,770,367,097.54/178,469.45
  6. Step 6: Final answer
    x = 155,602.92

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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.