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Finding the Fourth Proportional to 86,763, 119,732.94 and 47,019

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Solution

The fourth proportional to 86,763, 119,732.94 and 47,019 is: 64,886.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,763 : 119,732.94 = 47,019 : x
  2. Step 2: Convert to fraction form
    86,763/119,732.94 = 47,019/x
  3. Step 3: Cross multiply
    86,763x = 119,732.94 × 47,019
  4. Step 4: Simplify right side
    86,763x = 5,629,723,105.86
  5. Step 5: Solve for x
    x = 5,629,723,105.86/86,763
  6. Step 6: Final answer
    x = 64,886.22

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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.