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Finding the Fourth Proportional to 118,507.22, 177,770.28 and 39,621.86

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Solution

The fourth proportional to 118,507.22, 177,770.28 and 39,621.86 is: 59,435.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,507.22 : 177,770.28 = 39,621.86 : x
  2. Step 2: Convert to fraction form
    118,507.22/177,770.28 = 39,621.86/x
  3. Step 3: Cross multiply
    118,507.22x = 177,770.28 × 39,621.86
  4. Step 4: Simplify right side
    118,507.22x = 7,043,589,146.32
  5. Step 5: Solve for x
    x = 7,043,589,146.32/118,507.22
  6. Step 6: Final answer
    x = 59,435.95

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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.