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Finding the Third Proportional to 387,183.75 and 830,400.75

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Solution

The third proportional to 387,183.75 and 830,400.75 is: 1,780,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,183.75 : 830,400.75 = 830,400.75 : x
  2. Step 2: Convert to fraction form
    387,183.75/830,400.75 = 830,400.75/x
  3. Step 3: Cross multiply
    387,183.75x = 830,400.75 × 830,400.75
  4. Step 4: Simplify right side
    387,183.75x = 689,565,405,600.56
  5. Step 5: Solve for x
    x = 689,565,405,600.56/387,183.75
  6. Step 6: Final answer
    x = 1,780,977.13

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.