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Finding the Fourth Proportional to 118,124.80, 177,316.80 and 73,801.60

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Solution

The fourth proportional to 118,124.80, 177,316.80 and 73,801.60 is: 110,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,124.80 : 177,316.80 = 73,801.60 : x
  2. Step 2: Convert to fraction form
    118,124.80/177,316.80 = 73,801.60/x
  3. Step 3: Cross multiply
    118,124.80x = 177,316.80 × 73,801.60
  4. Step 4: Simplify right side
    118,124.80x = 13,086,263,546.88
  5. Step 5: Solve for x
    x = 13,086,263,546.88/118,124.80
  6. Step 6: Final answer
    x = 110,783.37

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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.