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Finding the Fourth Proportional to 29,992.92, 44,989.32 and 12,231

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Solution

The fourth proportional to 29,992.92, 44,989.32 and 12,231 is: 18,346.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,992.92 : 44,989.32 = 12,231 : x
  2. Step 2: Convert to fraction form
    29,992.92/44,989.32 = 12,231/x
  3. Step 3: Cross multiply
    29,992.92x = 44,989.32 × 12,231
  4. Step 4: Simplify right side
    29,992.92x = 550,264,372.92
  5. Step 5: Solve for x
    x = 550,264,372.92/29,992.92
  6. Step 6: Final answer
    x = 18,346.48

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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.