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Finding the Fourth Proportional to 7,381,228.80, 11,073,592.80 and 3,787,550.40

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Solution

The fourth proportional to 7,381,228.80, 11,073,592.80 and 3,787,550.40 is: 5,682,223.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381,228.80 : 11,073,592.80 = 3,787,550.40 : x
  2. Step 2: Convert to fraction form
    7,381,228.80/11,073,592.80 = 3,787,550.40/x
  3. Step 3: Cross multiply
    7,381,228.80x = 11,073,592.80 × 3,787,550.40
  4. Step 4: Simplify right side
    7,381,228.80x = 41,941,790,839,077.12
  5. Step 5: Solve for x
    x = 41,941,790,839,077.12/7,381,228.80
  6. Step 6: Final answer
    x = 5,682,223.38

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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.