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Finding the Fourth Proportional to 67,459.01, 101,179.28 and 20,081.42

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Solution

The fourth proportional to 67,459.01, 101,179.28 and 20,081.42 is: 30,119.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,459.01 : 101,179.28 = 20,081.42 : x
  2. Step 2: Convert to fraction form
    67,459.01/101,179.28 = 20,081.42/x
  3. Step 3: Cross multiply
    67,459.01x = 101,179.28 × 20,081.42
  4. Step 4: Simplify right side
    67,459.01x = 2,031,823,616.98
  5. Step 5: Solve for x
    x = 2,031,823,616.98/67,459.01
  6. Step 6: Final answer
    x = 30,119.38

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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.