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Finding the Fourth Proportional to 79,930.80, 119,896.20 and 73,515.60

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Solution

The fourth proportional to 79,930.80, 119,896.20 and 73,515.60 is: 110,273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.80 : 119,896.20 = 73,515.60 : x
  2. Step 2: Convert to fraction form
    79,930.80/119,896.20 = 73,515.60/x
  3. Step 3: Cross multiply
    79,930.80x = 119,896.20 × 73,515.60
  4. Step 4: Simplify right side
    79,930.80x = 8,814,241,080.72
  5. Step 5: Solve for x
    x = 8,814,241,080.72/79,930.80
  6. Step 6: Final answer
    x = 110,273.40

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1.5x scale

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.