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Finding the Fourth Proportional to 8,802,820.80, 13,204,231.20 and 3,123,619.20

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Solution

The fourth proportional to 8,802,820.80, 13,204,231.20 and 3,123,619.20 is: 4,685,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802,820.80 : 13,204,231.20 = 3,123,619.20 : x
  2. Step 2: Convert to fraction form
    8,802,820.80/13,204,231.20 = 3,123,619.20/x
  3. Step 3: Cross multiply
    8,802,820.80x = 13,204,231.20 × 3,123,619.20
  4. Step 4: Simplify right side
    8,802,820.80x = 41,244,990,097,559.04
  5. Step 5: Solve for x
    x = 41,244,990,097,559.04/8,802,820.80
  6. Step 6: Final answer
    x = 4,685,428.80

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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.