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Finding the Fourth Proportional to 68,492.48, 102,759.49 and 48,540.55

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Solution

The fourth proportional to 68,492.48, 102,759.49 and 48,540.55 is: 72,825.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,492.48 : 102,759.49 = 48,540.55 : x
  2. Step 2: Convert to fraction form
    68,492.48/102,759.49 = 48,540.55/x
  3. Step 3: Cross multiply
    68,492.48x = 102,759.49 × 48,540.55
  4. Step 4: Simplify right side
    68,492.48x = 4,988,002,162.32
  5. Step 5: Solve for x
    x = 4,988,002,162.32/68,492.48
  6. Step 6: Final answer
    x = 72,825.54

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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.