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Finding the Fourth Proportional to 79,908.77, 119,748.92 and 58,682.31

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Solution

The fourth proportional to 79,908.77, 119,748.92 and 58,682.31 is: 87,939.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,908.77 : 119,748.92 = 58,682.31 : x
  2. Step 2: Convert to fraction form
    79,908.77/119,748.92 = 58,682.31/x
  3. Step 3: Cross multiply
    79,908.77x = 119,748.92 × 58,682.31
  4. Step 4: Simplify right side
    79,908.77x = 7,027,142,952.19
  5. Step 5: Solve for x
    x = 7,027,142,952.19/79,908.77
  6. Step 6: Final answer
    x = 87,939.58

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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.