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Finding the Fourth Proportional to 87,676.80, 131,443.20 and 37,795.20

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Solution

The fourth proportional to 87,676.80, 131,443.20 and 37,795.20 is: 56,661.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,676.80 : 131,443.20 = 37,795.20 : x
  2. Step 2: Convert to fraction form
    87,676.80/131,443.20 = 37,795.20/x
  3. Step 3: Cross multiply
    87,676.80x = 131,443.20 × 37,795.20
  4. Step 4: Simplify right side
    87,676.80x = 4,967,922,032.64
  5. Step 5: Solve for x
    x = 4,967,922,032.64/87,676.80
  6. Step 6: Final answer
    x = 56,661.76

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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.