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Finding the Fourth Proportional to 8,495,813.40, 12,722,724.90 and 5,640,466.20

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Solution

The fourth proportional to 8,495,813.40, 12,722,724.90 and 5,640,466.20 is: 8,446,760.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495,813.40 : 12,722,724.90 = 5,640,466.20 : x
  2. Step 2: Convert to fraction form
    8,495,813.40/12,722,724.90 = 5,640,466.20/x
  3. Step 3: Cross multiply
    8,495,813.40x = 12,722,724.90 × 5,640,466.20
  4. Step 4: Simplify right side
    8,495,813.40x = 71,762,099,770,348.39
  5. Step 5: Solve for x
    x = 71,762,099,770,348.39/8,495,813.40
  6. Step 6: Final answer
    x = 8,446,760.35

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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.