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Finding the Fourth Proportional to 83,940.40, 125,910.60 and 48,462.40

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Solution

The fourth proportional to 83,940.40, 125,910.60 and 48,462.40 is: 72,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,940.40 : 125,910.60 = 48,462.40 : x
  2. Step 2: Convert to fraction form
    83,940.40/125,910.60 = 48,462.40/x
  3. Step 3: Cross multiply
    83,940.40x = 125,910.60 × 48,462.40
  4. Step 4: Simplify right side
    83,940.40x = 6,101,929,861.44
  5. Step 5: Solve for x
    x = 6,101,929,861.44/83,940.40
  6. Step 6: Final answer
    x = 72,693.60

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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.