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Finding the Fourth Proportional to 7,006,891.53, 9,669,496.88 and 3,909,230.57

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Solution

The fourth proportional to 7,006,891.53, 9,669,496.88 and 3,909,230.57 is: 5,394,730.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,006,891.53 : 9,669,496.88 = 3,909,230.57 : x
  2. Step 2: Convert to fraction form
    7,006,891.53/9,669,496.88 = 3,909,230.57/x
  3. Step 3: Cross multiply
    7,006,891.53x = 9,669,496.88 × 3,909,230.57
  4. Step 4: Simplify right side
    7,006,891.53x = 37,800,292,731,921.98
  5. Step 5: Solve for x
    x = 37,800,292,731,921.98/7,006,891.53
  6. Step 6: Final answer
    x = 5,394,730.68

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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.