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Finding the Fourth Proportional to 193,076.60, 289,442.10 and 74,708.60

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Solution

The fourth proportional to 193,076.60, 289,442.10 and 74,708.60 is: 111,996.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,076.60 : 289,442.10 = 74,708.60 : x
  2. Step 2: Convert to fraction form
    193,076.60/289,442.10 = 74,708.60/x
  3. Step 3: Cross multiply
    193,076.60x = 289,442.10 × 74,708.60
  4. Step 4: Simplify right side
    193,076.60x = 21,623,814,072.06
  5. Step 5: Solve for x
    x = 21,623,814,072.06/193,076.60
  6. Step 6: Final answer
    x = 111,996.04

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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.