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Finding the Fourth Proportional to 48,236.80, 72,355.20 and 21,992.80

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Solution

The fourth proportional to 48,236.80, 72,355.20 and 21,992.80 is: 32,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,236.80 : 72,355.20 = 21,992.80 : x
  2. Step 2: Convert to fraction form
    48,236.80/72,355.20 = 21,992.80/x
  3. Step 3: Cross multiply
    48,236.80x = 72,355.20 × 21,992.80
  4. Step 4: Simplify right side
    48,236.80x = 1,591,293,442.56
  5. Step 5: Solve for x
    x = 1,591,293,442.56/48,236.80
  6. Step 6: Final answer
    x = 32,989.20

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1.5x scale

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.