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Finding the Fourth Proportional to 6,491,881.55, 8,958,763.99 and 3,551,645.37

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Solution

The fourth proportional to 6,491,881.55, 8,958,763.99 and 3,551,645.37 is: 4,901,252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491,881.55 : 8,958,763.99 = 3,551,645.37 : x
  2. Step 2: Convert to fraction form
    6,491,881.55/8,958,763.99 = 3,551,645.37/x
  3. Step 3: Cross multiply
    6,491,881.55x = 8,958,763.99 × 3,551,645.37
  4. Step 4: Simplify right side
    6,491,881.55x = 31,818,352,684,041.15
  5. Step 5: Solve for x
    x = 31,818,352,684,041.15/6,491,881.55
  6. Step 6: Final answer
    x = 4,901,252.81

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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.