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Finding the Fourth Proportional to 22,475.20, 33,712.80 and 7,682.80

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Solution

The fourth proportional to 22,475.20, 33,712.80 and 7,682.80 is: 11,524.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,475.20 : 33,712.80 = 7,682.80 : x
  2. Step 2: Convert to fraction form
    22,475.20/33,712.80 = 7,682.80/x
  3. Step 3: Cross multiply
    22,475.20x = 33,712.80 × 7,682.80
  4. Step 4: Simplify right side
    22,475.20x = 259,008,699.84
  5. Step 5: Solve for x
    x = 259,008,699.84/22,475.20
  6. Step 6: Final answer
    x = 11,524.20

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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.