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Finding the Fourth Proportional to 483,318.73, 724,578.93 and 213,254.59

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Solution

The fourth proportional to 483,318.73, 724,578.93 and 213,254.59 is: 319,705.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,318.73 : 724,578.93 = 213,254.59 : x
  2. Step 2: Convert to fraction form
    483,318.73/724,578.93 = 213,254.59/x
  3. Step 3: Cross multiply
    483,318.73x = 724,578.93 × 213,254.59
  4. Step 4: Simplify right side
    483,318.73x = 154,519,782,639.79
  5. Step 5: Solve for x
    x = 154,519,782,639.79/483,318.73
  6. Step 6: Final answer
    x = 319,705.76

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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.