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Finding the Fourth Proportional to 215,940.30, 323,764.65 and 110,672.70

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Solution

The fourth proportional to 215,940.30, 323,764.65 and 110,672.70 is: 165,934.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,940.30 : 323,764.65 = 110,672.70 : x
  2. Step 2: Convert to fraction form
    215,940.30/323,764.65 = 110,672.70/x
  3. Step 3: Cross multiply
    215,940.30x = 323,764.65 × 110,672.70
  4. Step 4: Simplify right side
    215,940.30x = 35,831,907,980.06
  5. Step 5: Solve for x
    x = 35,831,907,980.06/215,940.30
  6. Step 6: Final answer
    x = 165,934.33

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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.