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Finding the Fourth Proportional to 11,962,280.80, 17,943,421.20 and 11,962,280.80

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Solution

The fourth proportional to 11,962,280.80, 17,943,421.20 and 11,962,280.80 is: 17,943,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,962,280.80 : 17,943,421.20 = 11,962,280.80 : x
  2. Step 2: Convert to fraction form
    11,962,280.80/17,943,421.20 = 11,962,280.80/x
  3. Step 3: Cross multiply
    11,962,280.80x = 17,943,421.20 × 11,962,280.80
  4. Step 4: Simplify right side
    11,962,280.80x = 214,644,242,907,072.97
  5. Step 5: Solve for x
    x = 214,644,242,907,072.97/11,962,280.80
  6. Step 6: Final answer
    x = 17,943,421.20

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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.