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Finding the Fourth Proportional to 67,119.21, 100,676.49 and 17,199.72

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Solution

The fourth proportional to 67,119.21, 100,676.49 and 17,199.72 is: 25,798.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,119.21 : 100,676.49 = 17,199.72 : x
  2. Step 2: Convert to fraction form
    67,119.21/100,676.49 = 17,199.72/x
  3. Step 3: Cross multiply
    67,119.21x = 100,676.49 × 17,199.72
  4. Step 4: Simplify right side
    67,119.21x = 1,731,607,438.58
  5. Step 5: Solve for x
    x = 1,731,607,438.58/67,119.21
  6. Step 6: Final answer
    x = 25,798.98

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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.