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Finding the Fourth Proportional to 66,912.10, 100,368.33 and 22,570

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Solution

The fourth proportional to 66,912.10, 100,368.33 and 22,570 is: 33,855.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,912.10 : 100,368.33 = 22,570 : x
  2. Step 2: Convert to fraction form
    66,912.10/100,368.33 = 22,570/x
  3. Step 3: Cross multiply
    66,912.10x = 100,368.33 × 22,570
  4. Step 4: Simplify right side
    66,912.10x = 2,265,313,208.10
  5. Step 5: Solve for x
    x = 2,265,313,208.10/66,912.10
  6. Step 6: Final answer
    x = 33,855.06

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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.