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Finding the Fourth Proportional to 395,896.80, 593,456.40 and 353,906.40

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Solution

The fourth proportional to 395,896.80, 593,456.40 and 353,906.40 is: 530,512.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,896.80 : 593,456.40 = 353,906.40 : x
  2. Step 2: Convert to fraction form
    395,896.80/593,456.40 = 353,906.40/x
  3. Step 3: Cross multiply
    395,896.80x = 593,456.40 × 353,906.40
  4. Step 4: Simplify right side
    395,896.80x = 210,028,018,080.96
  5. Step 5: Solve for x
    x = 210,028,018,080.96/395,896.80
  6. Step 6: Final answer
    x = 530,512.04

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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.