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Finding the Fourth Proportional to 58,147.45, 87,165.81 and 18,676.89

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Solution

The fourth proportional to 58,147.45, 87,165.81 and 18,676.89 is: 27,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,147.45 : 87,165.81 = 18,676.89 : x
  2. Step 2: Convert to fraction form
    58,147.45/87,165.81 = 18,676.89/x
  3. Step 3: Cross multiply
    58,147.45x = 87,165.81 × 18,676.89
  4. Step 4: Simplify right side
    58,147.45x = 1,627,986,245.13
  5. Step 5: Solve for x
    x = 1,627,986,245.13/58,147.45
  6. Step 6: Final answer
    x = 27,997.55

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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.