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Finding the Fourth Proportional to 484,211.80, 726,317.70 and 188,723.80

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Solution

The fourth proportional to 484,211.80, 726,317.70 and 188,723.80 is: 283,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,211.80 : 726,317.70 = 188,723.80 : x
  2. Step 2: Convert to fraction form
    484,211.80/726,317.70 = 188,723.80/x
  3. Step 3: Cross multiply
    484,211.80x = 726,317.70 × 188,723.80
  4. Step 4: Simplify right side
    484,211.80x = 137,073,436,351.26
  5. Step 5: Solve for x
    x = 137,073,436,351.26/484,211.80
  6. Step 6: Final answer
    x = 283,085.70

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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.