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Finding the Fourth Proportional to 13,124,906.20, 19,687,359.30 and 13,124,906.20

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Solution

The fourth proportional to 13,124,906.20, 19,687,359.30 and 13,124,906.20 is: 19,687,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124,906.20 : 19,687,359.30 = 13,124,906.20 : x
  2. Step 2: Convert to fraction form
    13,124,906.20/19,687,359.30 = 13,124,906.20/x
  3. Step 3: Cross multiply
    13,124,906.20x = 19,687,359.30 × 13,124,906.20
  4. Step 4: Simplify right side
    13,124,906.20x = 258,394,744,138,197.66
  5. Step 5: Solve for x
    x = 258,394,744,138,197.66/13,124,906.20
  6. Step 6: Final answer
    x = 19,687,359.30

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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.