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Finding the Fourth Proportional to 395,856.80, 593,785.20 and 307,383.20

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Solution

The fourth proportional to 395,856.80, 593,785.20 and 307,383.20 is: 461,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,856.80 : 593,785.20 = 307,383.20 : x
  2. Step 2: Convert to fraction form
    395,856.80/593,785.20 = 307,383.20/x
  3. Step 3: Cross multiply
    395,856.80x = 593,785.20 × 307,383.20
  4. Step 4: Simplify right side
    395,856.80x = 182,519,594,888.64
  5. Step 5: Solve for x
    x = 182,519,594,888.64/395,856.80
  6. Step 6: Final answer
    x = 461,074.80

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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.