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Finding the Fourth Proportional to 168,108.20, 251,940.90 and 123,525.80

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Solution

The fourth proportional to 168,108.20, 251,940.90 and 123,525.80 is: 185,126.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,108.20 : 251,940.90 = 123,525.80 : x
  2. Step 2: Convert to fraction form
    168,108.20/251,940.90 = 123,525.80/x
  3. Step 3: Cross multiply
    168,108.20x = 251,940.90 × 123,525.80
  4. Step 4: Simplify right side
    168,108.20x = 31,121,201,225.22
  5. Step 5: Solve for x
    x = 31,121,201,225.22/168,108.20
  6. Step 6: Final answer
    x = 185,126.02

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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.