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Finding the Fourth Proportional to 8,394,209.40, 12,591,314.10 and 8,394,209.40

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Solution

The fourth proportional to 8,394,209.40, 12,591,314.10 and 8,394,209.40 is: 12,591,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394,209.40 : 12,591,314.10 = 8,394,209.40 : x
  2. Step 2: Convert to fraction form
    8,394,209.40/12,591,314.10 = 8,394,209.40/x
  3. Step 3: Cross multiply
    8,394,209.40x = 12,591,314.10 × 8,394,209.40
  4. Step 4: Simplify right side
    8,394,209.40x = 105,694,127,176,572.55
  5. Step 5: Solve for x
    x = 105,694,127,176,572.55/8,394,209.40
  6. Step 6: Final answer
    x = 12,591,314.10

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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.