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Finding the Third Proportional to 48,545 and 64,720

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Solution

The third proportional to 48,545 and 64,720 is: 86,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,545 : 64,720 = 64,720 : x
  2. Step 2: Convert to fraction form
    48,545/64,720 = 64,720/x
  3. Step 3: Cross multiply
    48,545x = 64,720 × 64,720
  4. Step 4: Simplify right side
    48,545x = 4,188,678,400
  5. Step 5: Solve for x
    x = 4,188,678,400/48,545
  6. Step 6: Final answer
    x = 86,284.45

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.