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Finding the Fourth Proportional to 5,271,787.62, 7,907,853.63 and 1,813,491.69

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Solution

The fourth proportional to 5,271,787.62, 7,907,853.63 and 1,813,491.69 is: 2,720,296.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271,787.62 : 7,907,853.63 = 1,813,491.69 : x
  2. Step 2: Convert to fraction form
    5,271,787.62/7,907,853.63 = 1,813,491.69/x
  3. Step 3: Cross multiply
    5,271,787.62x = 7,907,853.63 × 1,813,491.69
  4. Step 4: Simplify right side
    5,271,787.62x = 14,340,826,843,741.33
  5. Step 5: Solve for x
    x = 14,340,826,843,741.33/5,271,787.62
  6. Step 6: Final answer
    x = 2,720,296.77

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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.