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Finding the Fourth Proportional to 58,107.60, 87,132.59 and 20,662.04

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Solution

The fourth proportional to 58,107.60, 87,132.59 and 20,662.04 is: 30,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,107.60 : 87,132.59 = 20,662.04 : x
  2. Step 2: Convert to fraction form
    58,107.60/87,132.59 = 20,662.04/x
  3. Step 3: Cross multiply
    58,107.60x = 87,132.59 × 20,662.04
  4. Step 4: Simplify right side
    58,107.60x = 1,800,336,520.91
  5. Step 5: Solve for x
    x = 1,800,336,520.91/58,107.60
  6. Step 6: Final answer
    x = 30,982.81

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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.