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Finding the Fourth Proportional to 280,157.45, 386,062.40 and 199,358.60

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Solution

The fourth proportional to 280,157.45, 386,062.40 and 199,358.60 is: 274,720.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,157.45 : 386,062.40 = 199,358.60 : x
  2. Step 2: Convert to fraction form
    280,157.45/386,062.40 = 199,358.60/x
  3. Step 3: Cross multiply
    280,157.45x = 386,062.40 × 199,358.60
  4. Step 4: Simplify right side
    280,157.45x = 76,964,858,144.72
  5. Step 5: Solve for x
    x = 76,964,858,144.72/280,157.45
  6. Step 6: Final answer
    x = 274,720.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.