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Finding the Fourth Proportional to 3,459,175.20, 5,179,431.60 and 3,459,175.20

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Solution

The fourth proportional to 3,459,175.20, 5,179,431.60 and 3,459,175.20 is: 5,179,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459,175.20 : 5,179,431.60 = 3,459,175.20 : x
  2. Step 2: Convert to fraction form
    3,459,175.20/5,179,431.60 = 3,459,175.20/x
  3. Step 3: Cross multiply
    3,459,175.20x = 5,179,431.60 × 3,459,175.20
  4. Step 4: Simplify right side
    3,459,175.20x = 17,916,561,340,816.32
  5. Step 5: Solve for x
    x = 17,916,561,340,816.32/3,459,175.20
  6. Step 6: Final answer
    x = 5,179,431.60

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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.