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Finding the Third Proportional to 29,576 and 64,120

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Solution

The third proportional to 29,576 and 64,120 is: 139,010.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,576 : 64,120 = 64,120 : x
  2. Step 2: Convert to fraction form
    29,576/64,120 = 64,120/x
  3. Step 3: Cross multiply
    29,576x = 64,120 × 64,120
  4. Step 4: Simplify right side
    29,576x = 4,111,374,400
  5. Step 5: Solve for x
    x = 4,111,374,400/29,576
  6. Step 6: Final answer
    x = 139,010.49

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.