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Finding the Third Proportional to 49,400 and 75,310

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Solution

The third proportional to 49,400 and 75,310 is: 114,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,400 : 75,310 = 75,310 : x
  2. Step 2: Convert to fraction form
    49,400/75,310 = 75,310/x
  3. Step 3: Cross multiply
    49,400x = 75,310 × 75,310
  4. Step 4: Simplify right side
    49,400x = 5,671,596,100
  5. Step 5: Solve for x
    x = 5,671,596,100/49,400
  6. Step 6: Final answer
    x = 114,809.64

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.