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Finding the Third Proportional to 39,154.50 and 76,338

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Solution

The third proportional to 39,154.50 and 76,338 is: 148,833.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,154.50 : 76,338 = 76,338 : x
  2. Step 2: Convert to fraction form
    39,154.50/76,338 = 76,338/x
  3. Step 3: Cross multiply
    39,154.50x = 76,338 × 76,338
  4. Step 4: Simplify right side
    39,154.50x = 5,827,490,244
  5. Step 5: Solve for x
    x = 5,827,490,244/39,154.50
  6. Step 6: Final answer
    x = 148,833.22

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.