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Finding the Fourth Proportional to 6,405,674.34, 8,839,830.60 and 3,505,065.21

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Solution

The fourth proportional to 6,405,674.34, 8,839,830.60 and 3,505,065.21 is: 4,836,990.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405,674.34 : 8,839,830.60 = 3,505,065.21 : x
  2. Step 2: Convert to fraction form
    6,405,674.34/8,839,830.60 = 3,505,065.21/x
  3. Step 3: Cross multiply
    6,405,674.34x = 8,839,830.60 × 3,505,065.21
  4. Step 4: Simplify right side
    6,405,674.34x = 30,984,182,698,353.43
  5. Step 5: Solve for x
    x = 30,984,182,698,353.43/6,405,674.34
  6. Step 6: Final answer
    x = 4,836,990.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.