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Finding the Fourth Proportional to 2,650,540.80, 3,972,700.80 and 1,134,220.80

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Solution

The fourth proportional to 2,650,540.80, 3,972,700.80 and 1,134,220.80 is: 1,700,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650,540.80 : 3,972,700.80 = 1,134,220.80 : x
  2. Step 2: Convert to fraction form
    2,650,540.80/3,972,700.80 = 1,134,220.80/x
  3. Step 3: Cross multiply
    2,650,540.80x = 3,972,700.80 × 1,134,220.80
  4. Step 4: Simplify right side
    2,650,540.80x = 4,505,919,879,536.64
  5. Step 5: Solve for x
    x = 4,505,919,879,536.64/2,650,540.80
  6. Step 6: Final answer
    x = 1,700,000.20

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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.