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Finding the Fourth Proportional to 13,476,982.20, 20,201,695.20 and 6,643,044.60

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Solution

The fourth proportional to 13,476,982.20, 20,201,695.20 and 6,643,044.60 is: 9,957,775.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476,982.20 : 20,201,695.20 = 6,643,044.60 : x
  2. Step 2: Convert to fraction form
    13,476,982.20/20,201,695.20 = 6,643,044.60/x
  3. Step 3: Cross multiply
    13,476,982.20x = 20,201,695.20 × 6,643,044.60
  4. Step 4: Simplify right side
    13,476,982.20x = 134,200,762,209,205.91
  5. Step 5: Solve for x
    x = 134,200,762,209,205.91/13,476,982.20
  6. Step 6: Final answer
    x = 9,957,775.43

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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.