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Finding the Fourth Proportional to 8,394,906.40, 12,577,844.40 and 3,897,959.20

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Solution

The fourth proportional to 8,394,906.40, 12,577,844.40 and 3,897,959.20 is: 5,840,199.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394,906.40 : 12,577,844.40 = 3,897,959.20 : x
  2. Step 2: Convert to fraction form
    8,394,906.40/12,577,844.40 = 3,897,959.20/x
  3. Step 3: Cross multiply
    8,394,906.40x = 12,577,844.40 × 3,897,959.20
  4. Step 4: Simplify right side
    8,394,906.40x = 49,027,924,295,148.48
  5. Step 5: Solve for x
    x = 49,027,924,295,148.48/8,394,906.40
  6. Step 6: Final answer
    x = 5,840,199.04

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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.