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Finding the Fourth Proportional to 67,224.60, 100,705.68 and 40,863.96

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Solution

The fourth proportional to 67,224.60, 100,705.68 and 40,863.96 is: 61,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,224.60 : 100,705.68 = 40,863.96 : x
  2. Step 2: Convert to fraction form
    67,224.60/100,705.68 = 40,863.96/x
  3. Step 3: Cross multiply
    67,224.60x = 100,705.68 × 40,863.96
  4. Step 4: Simplify right side
    67,224.60x = 4,115,232,879.29
  5. Step 5: Solve for x
    x = 4,115,232,879.29/67,224.60
  6. Step 6: Final answer
    x = 61,216.18

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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.