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Finding the Fourth Proportional to 483,278.70, 724,323.47 and 198,791.92

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Solution

The fourth proportional to 483,278.70, 724,323.47 and 198,791.92 is: 297,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,278.70 : 724,323.47 = 198,791.92 : x
  2. Step 2: Convert to fraction form
    483,278.70/724,323.47 = 198,791.92/x
  3. Step 3: Cross multiply
    483,278.70x = 724,323.47 × 198,791.92
  4. Step 4: Simplify right side
    483,278.70x = 143,989,653,213.81
  5. Step 5: Solve for x
    x = 143,989,653,213.81/483,278.70
  6. Step 6: Final answer
    x = 297,943.30

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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.