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Finding the Fourth Proportional to 58,286.70, 87,411.51 and 18,834.48

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Solution

The fourth proportional to 58,286.70, 87,411.51 and 18,834.48 is: 28,245.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,286.70 : 87,411.51 = 18,834.48 : x
  2. Step 2: Convert to fraction form
    58,286.70/87,411.51 = 18,834.48/x
  3. Step 3: Cross multiply
    58,286.70x = 87,411.51 × 18,834.48
  4. Step 4: Simplify right side
    58,286.70x = 1,646,350,336.86
  5. Step 5: Solve for x
    x = 1,646,350,336.86/58,286.70
  6. Step 6: Final answer
    x = 28,245.73

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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.