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Finding the Fourth Proportional to 231,882.40, 347,871.60 and 74,090.40

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Solution

The fourth proportional to 231,882.40, 347,871.60 and 74,090.40 is: 111,150.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,882.40 : 347,871.60 = 74,090.40 : x
  2. Step 2: Convert to fraction form
    231,882.40/347,871.60 = 74,090.40/x
  3. Step 3: Cross multiply
    231,882.40x = 347,871.60 × 74,090.40
  4. Step 4: Simplify right side
    231,882.40x = 25,773,945,992.64
  5. Step 5: Solve for x
    x = 25,773,945,992.64/231,882.40
  6. Step 6: Final answer
    x = 111,150.94

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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.