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Finding the Fourth Proportional to 483,221.37, 724,775.74 and 128,262.97

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Solution

The fourth proportional to 483,221.37, 724,775.74 and 128,262.97 is: 192,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,221.37 : 724,775.74 = 128,262.97 : x
  2. Step 2: Convert to fraction form
    483,221.37/724,775.74 = 128,262.97/x
  3. Step 3: Cross multiply
    483,221.37x = 724,775.74 × 128,262.97
  4. Step 4: Simplify right side
    483,221.37x = 92,961,888,996.35
  5. Step 5: Solve for x
    x = 92,961,888,996.35/483,221.37
  6. Step 6: Final answer
    x = 192,379.51

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1.5x scale

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.