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Finding the Fourth Proportional to 8,872,578.80, 13,308,868.20 and 3,481,405.10

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Solution

The fourth proportional to 8,872,578.80, 13,308,868.20 and 3,481,405.10 is: 5,222,107.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872,578.80 : 13,308,868.20 = 3,481,405.10 : x
  2. Step 2: Convert to fraction form
    8,872,578.80/13,308,868.20 = 3,481,405.10/x
  3. Step 3: Cross multiply
    8,872,578.80x = 13,308,868.20 × 3,481,405.10
  4. Step 4: Simplify right side
    8,872,578.80x = 46,333,561,626,707.82
  5. Step 5: Solve for x
    x = 46,333,561,626,707.82/8,872,578.80
  6. Step 6: Final answer
    x = 5,222,107.65

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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.