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Finding the Third Proportional to 3,420,842.75 and 7,384,061.50

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Solution

The third proportional to 3,420,842.75 and 7,384,061.50 is: 15,938,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420,842.75 : 7,384,061.50 = 7,384,061.50 : x
  2. Step 2: Convert to fraction form
    3,420,842.75/7,384,061.50 = 7,384,061.50/x
  3. Step 3: Cross multiply
    3,420,842.75x = 7,384,061.50 × 7,384,061.50
  4. Step 4: Simplify right side
    3,420,842.75x = 54,524,364,235,782.25
  5. Step 5: Solve for x
    x = 54,524,364,235,782.25/3,420,842.75
  6. Step 6: Final answer
    x = 15,938,868.93

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.