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Finding the Fourth Proportional to 86,722.44, 119,679.30 and 48,995.88

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Solution

The fourth proportional to 86,722.44, 119,679.30 and 48,995.88 is: 67,615.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,722.44 : 119,679.30 = 48,995.88 : x
  2. Step 2: Convert to fraction form
    86,722.44/119,679.30 = 48,995.88/x
  3. Step 3: Cross multiply
    86,722.44x = 119,679.30 × 48,995.88
  4. Step 4: Simplify right side
    86,722.44x = 5,863,792,621.28
  5. Step 5: Solve for x
    x = 5,863,792,621.28/86,722.44
  6. Step 6: Final answer
    x = 67,615.63

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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.