Home / 185,629.23-278,399.20-85,693.47

Finding the Fourth Proportional to 185,629.23, 278,399.20 and 85,693.47

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Solution

The fourth proportional to 185,629.23, 278,399.20 and 85,693.47 is: 128,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,629.23 : 278,399.20 = 85,693.47 : x
  2. Step 2: Convert to fraction form
    185,629.23/278,399.20 = 85,693.47/x
  3. Step 3: Cross multiply
    185,629.23x = 278,399.20 × 85,693.47
  4. Step 4: Simplify right side
    185,629.23x = 23,856,993,493.22
  5. Step 5: Solve for x
    x = 23,856,993,493.22/185,629.23
  6. Step 6: Final answer
    x = 128,519.60

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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.