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Finding the Fourth Proportional to 215,990.44, 323,948.72 and 58,181.98

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Solution

The fourth proportional to 215,990.44, 323,948.72 and 58,181.98 is: 87,263.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,990.44 : 323,948.72 = 58,181.98 : x
  2. Step 2: Convert to fraction form
    215,990.44/323,948.72 = 58,181.98/x
  3. Step 3: Cross multiply
    215,990.44x = 323,948.72 × 58,181.98
  4. Step 4: Simplify right side
    215,990.44x = 18,847,976,037.41
  5. Step 5: Solve for x
    x = 18,847,976,037.41/215,990.44
  6. Step 6: Final answer
    x = 87,263.01

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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.