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Finding the Fourth Proportional to 1,410,691.60, 2,113,704.60 and 1,200,739.60

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Solution

The fourth proportional to 1,410,691.60, 2,113,704.60 and 1,200,739.60 is: 1,799,123.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410,691.60 : 2,113,704.60 = 1,200,739.60 : x
  2. Step 2: Convert to fraction form
    1,410,691.60/2,113,704.60 = 1,200,739.60/x
  3. Step 3: Cross multiply
    1,410,691.60x = 2,113,704.60 × 1,200,739.60
  4. Step 4: Simplify right side
    1,410,691.60x = 2,538,008,815,922.16
  5. Step 5: Solve for x
    x = 2,538,008,815,922.16/1,410,691.60
  6. Step 6: Final answer
    x = 1,799,123.79

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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.