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Finding the Fourth Proportional to 118,237.20, 177,442.20 and 83,245.20

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Solution

The fourth proportional to 118,237.20, 177,442.20 and 83,245.20 is: 124,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,237.20 : 177,442.20 = 83,245.20 : x
  2. Step 2: Convert to fraction form
    118,237.20/177,442.20 = 83,245.20/x
  3. Step 3: Cross multiply
    118,237.20x = 177,442.20 × 83,245.20
  4. Step 4: Simplify right side
    118,237.20x = 14,771,211,427.44
  5. Step 5: Solve for x
    x = 14,771,211,427.44/118,237.20
  6. Step 6: Final answer
    x = 124,928.63

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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.