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Finding the Fourth Proportional to 6,642,776.70, 9,961,212.60 and 2,597,920.20

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Solution

The fourth proportional to 6,642,776.70, 9,961,212.60 and 2,597,920.20 is: 3,895,725.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,776.70 : 9,961,212.60 = 2,597,920.20 : x
  2. Step 2: Convert to fraction form
    6,642,776.70/9,961,212.60 = 2,597,920.20/x
  3. Step 3: Cross multiply
    6,642,776.70x = 9,961,212.60 × 2,597,920.20
  4. Step 4: Simplify right side
    6,642,776.70x = 25,878,435,430,034.52
  5. Step 5: Solve for x
    x = 25,878,435,430,034.52/6,642,776.70
  6. Step 6: Final answer
    x = 3,895,725.63

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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.