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Finding the Third Proportional to 3,318,673.78 and 7,221,379.08

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Solution

The third proportional to 3,318,673.78 and 7,221,379.08 is: 15,713,601.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318,673.78 : 7,221,379.08 = 7,221,379.08 : x
  2. Step 2: Convert to fraction form
    3,318,673.78/7,221,379.08 = 7,221,379.08/x
  3. Step 3: Cross multiply
    3,318,673.78x = 7,221,379.08 × 7,221,379.08
  4. Step 4: Simplify right side
    3,318,673.78x = 52,148,315,789,981.48
  5. Step 5: Solve for x
    x = 52,148,315,789,981.48/3,318,673.78
  6. Step 6: Final answer
    x = 15,713,601.04

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.