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Finding the Fourth Proportional to 66,716.89, 100,075.43 and 16,796.99

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Solution

The fourth proportional to 66,716.89, 100,075.43 and 16,796.99 is: 25,195.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.89 : 100,075.43 = 16,796.99 : x
  2. Step 2: Convert to fraction form
    66,716.89/100,075.43 = 16,796.99/x
  3. Step 3: Cross multiply
    66,716.89x = 100,075.43 × 16,796.99
  4. Step 4: Simplify right side
    66,716.89x = 1,680,966,289.14
  5. Step 5: Solve for x
    x = 1,680,966,289.14/66,716.89
  6. Step 6: Final answer
    x = 25,195.51

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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.