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Finding the Fourth Proportional to 215,906.60, 323,823.26 and 58,099.88

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Solution

The fourth proportional to 215,906.60, 323,823.26 and 58,099.88 is: 87,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,906.60 : 323,823.26 = 58,099.88 : x
  2. Step 2: Convert to fraction form
    215,906.60/323,823.26 = 58,099.88/x
  3. Step 3: Cross multiply
    215,906.60x = 323,823.26 × 58,099.88
  4. Step 4: Simplify right side
    215,906.60x = 18,814,092,547.21
  5. Step 5: Solve for x
    x = 18,814,092,547.21/215,906.60
  6. Step 6: Final answer
    x = 87,139.96

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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.