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Finding the Fourth Proportional to 7,262,578.80, 10,893,868.20 and 2,213,881.20

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Solution

The fourth proportional to 7,262,578.80, 10,893,868.20 and 2,213,881.20 is: 3,320,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,262,578.80 : 10,893,868.20 = 2,213,881.20 : x
  2. Step 2: Convert to fraction form
    7,262,578.80/10,893,868.20 = 2,213,881.20/x
  3. Step 3: Cross multiply
    7,262,578.80x = 10,893,868.20 × 2,213,881.20
  4. Step 4: Simplify right side
    7,262,578.80x = 24,117,730,003,257.84
  5. Step 5: Solve for x
    x = 24,117,730,003,257.84/7,262,578.80
  6. Step 6: Final answer
    x = 3,320,821.80

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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.