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Finding the Fourth Proportional to 48,615.91, 72,923.84 and 11,679.91

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Solution

The fourth proportional to 48,615.91, 72,923.84 and 11,679.91 is: 17,519.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,615.91 : 72,923.84 = 11,679.91 : x
  2. Step 2: Convert to fraction form
    48,615.91/72,923.84 = 11,679.91/x
  3. Step 3: Cross multiply
    48,615.91x = 72,923.84 × 11,679.91
  4. Step 4: Simplify right side
    48,615.91x = 851,743,756.84
  5. Step 5: Solve for x
    x = 851,743,756.84/48,615.91
  6. Step 6: Final answer
    x = 17,519.86

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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.