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Finding the Fourth Proportional to 34,705.86, 47,894.10 and 18,790.44

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Solution

The fourth proportional to 34,705.86, 47,894.10 and 18,790.44 is: 25,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,705.86 : 47,894.10 = 18,790.44 : x
  2. Step 2: Convert to fraction form
    34,705.86/47,894.10 = 18,790.44/x
  3. Step 3: Cross multiply
    34,705.86x = 47,894.10 × 18,790.44
  4. Step 4: Simplify right side
    34,705.86x = 899,951,212.40
  5. Step 5: Solve for x
    x = 899,951,212.40/34,705.86
  6. Step 6: Final answer
    x = 25,930.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.