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Finding the Fourth Proportional to 7,193,451.81, 9,926,846.19 and 3,930,196.31

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Solution

The fourth proportional to 7,193,451.81, 9,926,846.19 and 3,930,196.31 is: 5,423,606.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,193,451.81 : 9,926,846.19 = 3,930,196.31 : x
  2. Step 2: Convert to fraction form
    7,193,451.81/9,926,846.19 = 3,930,196.31/x
  3. Step 3: Cross multiply
    7,193,451.81x = 9,926,846.19 × 3,930,196.31
  4. Step 4: Simplify right side
    7,193,451.81x = 39,014,454,253,467
  5. Step 5: Solve for x
    x = 39,014,454,253,467/7,193,451.81
  6. Step 6: Final answer
    x = 5,423,606.81

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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.