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Finding the Fourth Proportional to 118,449.89, 163,183.71 and 82,575.80

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Solution

The fourth proportional to 118,449.89, 163,183.71 and 82,575.80 is: 113,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,449.89 : 163,183.71 = 82,575.80 : x
  2. Step 2: Convert to fraction form
    118,449.89/163,183.71 = 82,575.80/x
  3. Step 3: Cross multiply
    118,449.89x = 163,183.71 × 82,575.80
  4. Step 4: Simplify right side
    118,449.89x = 13,475,026,423.81
  5. Step 5: Solve for x
    x = 13,475,026,423.81/118,449.89
  6. Step 6: Final answer
    x = 113,761.41

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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.