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Finding the Fourth Proportional to 7,191.76, 9,922.69 and 4,208.33

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Solution

The fourth proportional to 7,191.76, 9,922.69 and 4,208.33 is: 5,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.76 : 9,922.69 = 4,208.33 : x
  2. Step 2: Convert to fraction form
    7,191.76/9,922.69 = 4,208.33/x
  3. Step 3: Cross multiply
    7,191.76x = 9,922.69 × 4,208.33
  4. Step 4: Simplify right side
    7,191.76x = 41,757,954.01
  5. Step 5: Solve for x
    x = 41,757,954.01/7,191.76
  6. Step 6: Final answer
    x = 5,806.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.