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Finding the Fourth Proportional to 5,791,879.80, 8,691,966.90 and 2,428,500.60

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Solution

The fourth proportional to 5,791,879.80, 8,691,966.90 and 2,428,500.60 is: 3,644,489.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791,879.80 : 8,691,966.90 = 2,428,500.60 : x
  2. Step 2: Convert to fraction form
    5,791,879.80/8,691,966.90 = 2,428,500.60/x
  3. Step 3: Cross multiply
    5,791,879.80x = 8,691,966.90 × 2,428,500.60
  4. Step 4: Simplify right side
    5,791,879.80x = 21,108,446,831,830.14
  5. Step 5: Solve for x
    x = 21,108,446,831,830.14/5,791,879.80
  6. Step 6: Final answer
    x = 3,644,489.80

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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.