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Finding the Fourth Proportional to 470,208.44, 648,900.52 and 276,629.78

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Solution

The fourth proportional to 470,208.44, 648,900.52 and 276,629.78 is: 381,756.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,208.44 : 648,900.52 = 276,629.78 : x
  2. Step 2: Convert to fraction form
    470,208.44/648,900.52 = 276,629.78/x
  3. Step 3: Cross multiply
    470,208.44x = 648,900.52 × 276,629.78
  4. Step 4: Simplify right side
    470,208.44x = 179,505,209,020.16
  5. Step 5: Solve for x
    x = 179,505,209,020.16/470,208.44
  6. Step 6: Final answer
    x = 381,756.67

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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.