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Finding the Fourth Proportional to 470,493.20, 705,912.60 and 190,038.80

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Solution

The fourth proportional to 470,493.20, 705,912.60 and 190,038.80 is: 285,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,493.20 : 705,912.60 = 190,038.80 : x
  2. Step 2: Convert to fraction form
    470,493.20/705,912.60 = 190,038.80/x
  3. Step 3: Cross multiply
    470,493.20x = 705,912.60 × 190,038.80
  4. Step 4: Simplify right side
    470,493.20x = 134,150,783,408.88
  5. Step 5: Solve for x
    x = 134,150,783,408.88/470,493.20
  6. Step 6: Final answer
    x = 285,128.00

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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.