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Finding the Fourth Proportional to 86,863.56, 119,874.24 and 49,137

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Solution

The fourth proportional to 86,863.56, 119,874.24 and 49,137 is: 67,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,863.56 : 119,874.24 = 49,137 : x
  2. Step 2: Convert to fraction form
    86,863.56/119,874.24 = 49,137/x
  3. Step 3: Cross multiply
    86,863.56x = 119,874.24 × 49,137
  4. Step 4: Simplify right side
    86,863.56x = 5,890,260,530.88
  5. Step 5: Solve for x
    x = 5,890,260,530.88/86,863.56
  6. Step 6: Final answer
    x = 67,810.49

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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.