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Finding the Fourth Proportional to 21,858.36, 32,773.41 and 11,994.99

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Solution

The fourth proportional to 21,858.36, 32,773.41 and 11,994.99 is: 17,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.36 : 32,773.41 = 11,994.99 : x
  2. Step 2: Convert to fraction form
    21,858.36/32,773.41 = 11,994.99/x
  3. Step 3: Cross multiply
    21,858.36x = 32,773.41 × 11,994.99
  4. Step 4: Simplify right side
    21,858.36x = 393,116,602.32
  5. Step 5: Solve for x
    x = 393,116,602.32/21,858.36
  6. Step 6: Final answer
    x = 17,984.73

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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.