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Finding the Fourth Proportional to 113,231.80, 169,847.70 and 73,865.80

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Solution

The fourth proportional to 113,231.80, 169,847.70 and 73,865.80 is: 110,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,231.80 : 169,847.70 = 73,865.80 : x
  2. Step 2: Convert to fraction form
    113,231.80/169,847.70 = 73,865.80/x
  3. Step 3: Cross multiply
    113,231.80x = 169,847.70 × 73,865.80
  4. Step 4: Simplify right side
    113,231.80x = 12,545,936,238.66
  5. Step 5: Solve for x
    x = 12,545,936,238.66/113,231.80
  6. Step 6: Final answer
    x = 110,798.70

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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.