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Finding the Third Proportional to 39,485.50 and 75,332

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Solution

The third proportional to 39,485.50 and 75,332 is: 143,721.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,485.50 : 75,332 = 75,332 : x
  2. Step 2: Convert to fraction form
    39,485.50/75,332 = 75,332/x
  3. Step 3: Cross multiply
    39,485.50x = 75,332 × 75,332
  4. Step 4: Simplify right side
    39,485.50x = 5,674,910,224
  5. Step 5: Solve for x
    x = 5,674,910,224/39,485.50
  6. Step 6: Final answer
    x = 143,721.37

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.