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Finding the Fourth Proportional to 67,361.84, 100,987.93 and 25,218.28

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Solution

The fourth proportional to 67,361.84, 100,987.93 and 25,218.28 is: 37,806.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,361.84 : 100,987.93 = 25,218.28 : x
  2. Step 2: Convert to fraction form
    67,361.84/100,987.93 = 25,218.28/x
  3. Step 3: Cross multiply
    67,361.84x = 100,987.93 × 25,218.28
  4. Step 4: Simplify right side
    67,361.84x = 2,546,741,895.36
  5. Step 5: Solve for x
    x = 2,546,741,895.36/67,361.84
  6. Step 6: Final answer
    x = 37,806.89

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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.