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Finding the Fourth Proportional to 116,540.80, 174,811.20 and 103,418.80

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Solution

The fourth proportional to 116,540.80, 174,811.20 and 103,418.80 is: 155,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,540.80 : 174,811.20 = 103,418.80 : x
  2. Step 2: Convert to fraction form
    116,540.80/174,811.20 = 103,418.80/x
  3. Step 3: Cross multiply
    116,540.80x = 174,811.20 × 103,418.80
  4. Step 4: Simplify right side
    116,540.80x = 18,078,764,530.56
  5. Step 5: Solve for x
    x = 18,078,764,530.56/116,540.80
  6. Step 6: Final answer
    x = 155,128.20

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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.