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Finding the Fourth Proportional to 3,991,372.80, 5,987,836.80 and 1,594,809.60

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Solution

The fourth proportional to 3,991,372.80, 5,987,836.80 and 1,594,809.60 is: 2,392,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991,372.80 : 5,987,836.80 = 1,594,809.60 : x
  2. Step 2: Convert to fraction form
    3,991,372.80/5,987,836.80 = 1,594,809.60/x
  3. Step 3: Cross multiply
    3,991,372.80x = 5,987,836.80 × 1,594,809.60
  4. Step 4: Simplify right side
    3,991,372.80x = 9,549,459,611,873.28
  5. Step 5: Solve for x
    x = 9,549,459,611,873.28/3,991,372.80
  6. Step 6: Final answer
    x = 2,392,525.10

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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.