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Finding the Fourth Proportional to 6,684,978.20, 9,225,220.38 and 3,629,113.88

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Solution

The fourth proportional to 6,684,978.20, 9,225,220.38 and 3,629,113.88 is: 5,008,150.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,684,978.20 : 9,225,220.38 = 3,629,113.88 : x
  2. Step 2: Convert to fraction form
    6,684,978.20/9,225,220.38 = 3,629,113.88/x
  3. Step 3: Cross multiply
    6,684,978.20x = 9,225,220.38 × 3,629,113.88
  4. Step 4: Simplify right side
    6,684,978.20x = 33,479,375,327,116.88
  5. Step 5: Solve for x
    x = 33,479,375,327,116.88/6,684,978.20
  6. Step 6: Final answer
    x = 5,008,150.26

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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.