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Finding the Fourth Proportional to 618,063.80, 927,441.30 and 263,017.40

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Solution

The fourth proportional to 618,063.80, 927,441.30 and 263,017.40 is: 394,673.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,063.80 : 927,441.30 = 263,017.40 : x
  2. Step 2: Convert to fraction form
    618,063.80/927,441.30 = 263,017.40/x
  3. Step 3: Cross multiply
    618,063.80x = 927,441.30 × 263,017.40
  4. Step 4: Simplify right side
    618,063.80x = 243,933,199,378.62
  5. Step 5: Solve for x
    x = 243,933,199,378.62/618,063.80
  6. Step 6: Final answer
    x = 394,673.17

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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.