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Finding the Fourth Proportional to 3,864,452.20, 5,403,147.20 and 3,864,452.20

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Solution

The fourth proportional to 3,864,452.20, 5,403,147.20 and 3,864,452.20 is: 5,403,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864,452.20 : 5,403,147.20 = 3,864,452.20 : x
  2. Step 2: Convert to fraction form
    3,864,452.20/5,403,147.20 = 3,864,452.20/x
  3. Step 3: Cross multiply
    3,864,452.20x = 5,403,147.20 × 3,864,452.20
  4. Step 4: Simplify right side
    3,864,452.20x = 20,880,204,083,963.84
  5. Step 5: Solve for x
    x = 20,880,204,083,963.84/3,864,452.20
  6. Step 6: Final answer
    x = 5,403,147.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.