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Finding the Fourth Proportional to 215,074.60, 322,611.90 and 162,586.60

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Solution

The fourth proportional to 215,074.60, 322,611.90 and 162,586.60 is: 243,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,074.60 : 322,611.90 = 162,586.60 : x
  2. Step 2: Convert to fraction form
    215,074.60/322,611.90 = 162,586.60/x
  3. Step 3: Cross multiply
    215,074.60x = 322,611.90 × 162,586.60
  4. Step 4: Simplify right side
    215,074.60x = 52,452,371,940.54
  5. Step 5: Solve for x
    x = 52,452,371,940.54/215,074.60
  6. Step 6: Final answer
    x = 243,879.90

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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.