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Finding the Fourth Proportional to 8,481,840.90, 12,722,761.35 and 8,481,840.90

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Solution

The fourth proportional to 8,481,840.90, 12,722,761.35 and 8,481,840.90 is: 12,722,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481,840.90 : 12,722,761.35 = 8,481,840.90 : x
  2. Step 2: Convert to fraction form
    8,481,840.90/12,722,761.35 = 8,481,840.90/x
  3. Step 3: Cross multiply
    8,481,840.90x = 12,722,761.35 × 8,481,840.90
  4. Step 4: Simplify right side
    8,481,840.90x = 107,912,437,579,369.22
  5. Step 5: Solve for x
    x = 107,912,437,579,369.22/8,481,840.90
  6. Step 6: Final answer
    x = 12,722,761.35

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Similar ratio
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1.5x scale

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.