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Finding the Fourth Proportional to 80,782.40, 111,459.48 and 48,522.44

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Solution

The fourth proportional to 80,782.40, 111,459.48 and 48,522.44 is: 66,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,782.40 : 111,459.48 = 48,522.44 : x
  2. Step 2: Convert to fraction form
    80,782.40/111,459.48 = 48,522.44/x
  3. Step 3: Cross multiply
    80,782.40x = 111,459.48 × 48,522.44
  4. Step 4: Simplify right side
    80,782.40x = 5,408,285,930.73
  5. Step 5: Solve for x
    x = 5,408,285,930.73/80,782.40
  6. Step 6: Final answer
    x = 66,948.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.