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Finding the Fourth Proportional to 8,662,997.67, 12,990,122.51 and 5,069,844.15

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Solution

The fourth proportional to 8,662,997.67, 12,990,122.51 and 5,069,844.15 is: 7,602,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662,997.67 : 12,990,122.51 = 5,069,844.15 : x
  2. Step 2: Convert to fraction form
    8,662,997.67/12,990,122.51 = 5,069,844.15/x
  3. Step 3: Cross multiply
    8,662,997.67x = 12,990,122.51 × 5,069,844.15
  4. Step 4: Simplify right side
    8,662,997.67x = 65,857,896,589,757.60
  5. Step 5: Solve for x
    x = 65,857,896,589,757.60/8,662,997.67
  6. Step 6: Final answer
    x = 7,602,206.43

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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.