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Finding the Fourth Proportional to 167,967.60, 251,951.40 and 83,986.80

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Solution

The fourth proportional to 167,967.60, 251,951.40 and 83,986.80 is: 125,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,967.60 : 251,951.40 = 83,986.80 : x
  2. Step 2: Convert to fraction form
    167,967.60/251,951.40 = 83,986.80/x
  3. Step 3: Cross multiply
    167,967.60x = 251,951.40 × 83,986.80
  4. Step 4: Simplify right side
    167,967.60x = 21,160,591,841.52
  5. Step 5: Solve for x
    x = 21,160,591,841.52/167,967.60
  6. Step 6: Final answer
    x = 125,980.20

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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.