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Finding the Fourth Proportional to 3,662,494.80, 5,493,742.20 and 3,121,285.20

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Solution

The fourth proportional to 3,662,494.80, 5,493,742.20 and 3,121,285.20 is: 4,681,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,662,494.80 : 5,493,742.20 = 3,121,285.20 : x
  2. Step 2: Convert to fraction form
    3,662,494.80/5,493,742.20 = 3,121,285.20/x
  3. Step 3: Cross multiply
    3,662,494.80x = 5,493,742.20 × 3,121,285.20
  4. Step 4: Simplify right side
    3,662,494.80x = 17,147,536,221,475.44
  5. Step 5: Solve for x
    x = 17,147,536,221,475.44/3,662,494.80
  6. Step 6: Final answer
    x = 4,681,927.80

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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.