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Finding the Third Proportional to 1,189,425.75 and 1,915,153.13

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Solution

The third proportional to 1,189,425.75 and 1,915,153.13 is: 3,083,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,425.75 : 1,915,153.13 = 1,915,153.13 : x
  2. Step 2: Convert to fraction form
    1,189,425.75/1,915,153.13 = 1,915,153.13/x
  3. Step 3: Cross multiply
    1,189,425.75x = 1,915,153.13 × 1,915,153.13
  4. Step 4: Simplify right side
    1,189,425.75x = 3,667,811,492,197.27
  5. Step 5: Solve for x
    x = 3,667,811,492,197.27/1,189,425.75
  6. Step 6: Final answer
    x = 3,083,682.60

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.