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Finding the Fourth Proportional to 112,321, 168,491.22 and 29,215

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Solution

The fourth proportional to 112,321, 168,491.22 and 29,215 is: 43,825.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,321 : 168,491.22 = 29,215 : x
  2. Step 2: Convert to fraction form
    112,321/168,491.22 = 29,215/x
  3. Step 3: Cross multiply
    112,321x = 168,491.22 × 29,215
  4. Step 4: Simplify right side
    112,321x = 4,922,470,992.30
  5. Step 5: Solve for x
    x = 4,922,470,992.30/112,321
  6. Step 6: Final answer
    x = 43,825.03

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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.