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Finding the Fourth Proportional to 22,015.72, 33,020.48 and 7,222.72

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Solution

The fourth proportional to 22,015.72, 33,020.48 and 7,222.72 is: 10,833.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,015.72 : 33,020.48 = 7,222.72 : x
  2. Step 2: Convert to fraction form
    22,015.72/33,020.48 = 7,222.72/x
  3. Step 3: Cross multiply
    22,015.72x = 33,020.48 × 7,222.72
  4. Step 4: Simplify right side
    22,015.72x = 238,497,638.10
  5. Step 5: Solve for x
    x = 238,497,638.10/22,015.72
  6. Step 6: Final answer
    x = 10,833.06

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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.