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Finding the Fourth Proportional to 4,978,916.80, 7,449,712.80 and 3,299,300.80

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Solution

The fourth proportional to 4,978,916.80, 7,449,712.80 and 3,299,300.80 is: 4,936,584.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978,916.80 : 7,449,712.80 = 3,299,300.80 : x
  2. Step 2: Convert to fraction form
    4,978,916.80/7,449,712.80 = 3,299,300.80/x
  3. Step 3: Cross multiply
    4,978,916.80x = 7,449,712.80 × 3,299,300.80
  4. Step 4: Simplify right side
    4,978,916.80x = 24,578,843,400,810.24
  5. Step 5: Solve for x
    x = 24,578,843,400,810.24/4,978,916.80
  6. Step 6: Final answer
    x = 4,936,584.48

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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.