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Finding the Fourth Proportional to 11,959.40, 17,936.94 and 4,562.21

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Solution

The fourth proportional to 11,959.40, 17,936.94 and 4,562.21 is: 6,842.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.40 : 17,936.94 = 4,562.21 : x
  2. Step 2: Convert to fraction form
    11,959.40/17,936.94 = 4,562.21/x
  3. Step 3: Cross multiply
    11,959.40x = 17,936.94 × 4,562.21
  4. Step 4: Simplify right side
    11,959.40x = 81,832,087.04
  5. Step 5: Solve for x
    x = 81,832,087.04/11,959.40
  6. Step 6: Final answer
    x = 6,842.49

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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.