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Finding the Third Proportional to 64,960 and 99,168

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Solution

The third proportional to 64,960 and 99,168 is: 151,389.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,960 : 99,168 = 99,168 : x
  2. Step 2: Convert to fraction form
    64,960/99,168 = 99,168/x
  3. Step 3: Cross multiply
    64,960x = 99,168 × 99,168
  4. Step 4: Simplify right side
    64,960x = 9,834,292,224
  5. Step 5: Solve for x
    x = 9,834,292,224/64,960
  6. Step 6: Final answer
    x = 151,389.97

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.