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Finding the Fourth Proportional to 6,643,517.90, 9,949,530.45 and 6,643,517.90

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Solution

The fourth proportional to 6,643,517.90, 9,949,530.45 and 6,643,517.90 is: 9,949,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643,517.90 : 9,949,530.45 = 6,643,517.90 : x
  2. Step 2: Convert to fraction form
    6,643,517.90/9,949,530.45 = 6,643,517.90/x
  3. Step 3: Cross multiply
    6,643,517.90x = 9,949,530.45 × 6,643,517.90
  4. Step 4: Simplify right side
    6,643,517.90x = 66,099,883,641,170.05
  5. Step 5: Solve for x
    x = 66,099,883,641,170.05/6,643,517.90
  6. Step 6: Final answer
    x = 9,949,530.45

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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.