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Finding the Fourth Proportional to 118,511.44, 177,684.16 and 43,621.87

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Solution

The fourth proportional to 118,511.44, 177,684.16 and 43,621.87 is: 65,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,511.44 : 177,684.16 = 43,621.87 : x
  2. Step 2: Convert to fraction form
    118,511.44/177,684.16 = 43,621.87/x
  3. Step 3: Cross multiply
    118,511.44x = 177,684.16 × 43,621.87
  4. Step 4: Simplify right side
    118,511.44x = 7,750,914,331.10
  5. Step 5: Solve for x
    x = 7,750,914,331.10/118,511.44
  6. Step 6: Final answer
    x = 65,402.25

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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.