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Finding the Fourth Proportional to 231,885.40, 347,876.10 and 74,093.40

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Solution

The fourth proportional to 231,885.40, 347,876.10 and 74,093.40 is: 111,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,885.40 : 347,876.10 = 74,093.40 : x
  2. Step 2: Convert to fraction form
    231,885.40/347,876.10 = 74,093.40/x
  3. Step 3: Cross multiply
    231,885.40x = 347,876.10 × 74,093.40
  4. Step 4: Simplify right side
    231,885.40x = 25,775,323,027.74
  5. Step 5: Solve for x
    x = 25,775,323,027.74/231,885.40
  6. Step 6: Final answer
    x = 111,155.44

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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.