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Finding the Fourth Proportional to 73,167.70, 109,676.20 and 28,776.46

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Solution

The fourth proportional to 73,167.70, 109,676.20 and 28,776.46 is: 43,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,167.70 : 109,676.20 = 28,776.46 : x
  2. Step 2: Convert to fraction form
    73,167.70/109,676.20 = 28,776.46/x
  3. Step 3: Cross multiply
    73,167.70x = 109,676.20 × 28,776.46
  4. Step 4: Simplify right side
    73,167.70x = 3,156,092,782.25
  5. Step 5: Solve for x
    x = 3,156,092,782.25/73,167.70
  6. Step 6: Final answer
    x = 43,135.06

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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.