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Finding the Fourth Proportional to 470,649.18, 649,500.90 and 255,789.26

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Solution

The fourth proportional to 470,649.18, 649,500.90 and 255,789.26 is: 352,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,649.18 : 649,500.90 = 255,789.26 : x
  2. Step 2: Convert to fraction form
    470,649.18/649,500.90 = 255,789.26/x
  3. Step 3: Cross multiply
    470,649.18x = 649,500.90 × 255,789.26
  4. Step 4: Simplify right side
    470,649.18x = 166,135,354,580.33
  5. Step 5: Solve for x
    x = 166,135,354,580.33/470,649.18
  6. Step 6: Final answer
    x = 352,991.91

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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.