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Finding the Fourth Proportional to 73,126.72, 109,676.20 and 35,649.10

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Solution

The fourth proportional to 73,126.72, 109,676.20 and 35,649.10 is: 53,466.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,126.72 : 109,676.20 = 35,649.10 : x
  2. Step 2: Convert to fraction form
    73,126.72/109,676.20 = 35,649.10/x
  3. Step 3: Cross multiply
    73,126.72x = 109,676.20 × 35,649.10
  4. Step 4: Simplify right side
    73,126.72x = 3,909,857,821.42
  5. Step 5: Solve for x
    x = 3,909,857,821.42/73,126.72
  6. Step 6: Final answer
    x = 53,466.88

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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.