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Finding the Third Proportional to 56,435.50 and 84,378

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Solution

The third proportional to 56,435.50 and 84,378 is: 126,155.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,435.50 : 84,378 = 84,378 : x
  2. Step 2: Convert to fraction form
    56,435.50/84,378 = 84,378/x
  3. Step 3: Cross multiply
    56,435.50x = 84,378 × 84,378
  4. Step 4: Simplify right side
    56,435.50x = 7,119,646,884
  5. Step 5: Solve for x
    x = 7,119,646,884/56,435.50
  6. Step 6: Final answer
    x = 126,155.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.