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Finding the Fourth Proportional to 58,635.60, 80,917.25 and 34,431.90

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Solution

The fourth proportional to 58,635.60, 80,917.25 and 34,431.90 is: 47,516.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,635.60 : 80,917.25 = 34,431.90 : x
  2. Step 2: Convert to fraction form
    58,635.60/80,917.25 = 34,431.90/x
  3. Step 3: Cross multiply
    58,635.60x = 80,917.25 × 34,431.90
  4. Step 4: Simplify right side
    58,635.60x = 2,786,134,488.12
  5. Step 5: Solve for x
    x = 2,786,134,488.12/58,635.60
  6. Step 6: Final answer
    x = 47,516.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.