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Finding the Third Proportional to 64,497 and 99,621

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Solution

The third proportional to 64,497 and 99,621 is: 153,872.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,497 : 99,621 = 99,621 : x
  2. Step 2: Convert to fraction form
    64,497/99,621 = 99,621/x
  3. Step 3: Cross multiply
    64,497x = 99,621 × 99,621
  4. Step 4: Simplify right side
    64,497x = 9,924,343,641
  5. Step 5: Solve for x
    x = 9,924,343,641/64,497
  6. Step 6: Final answer
    x = 153,872.95

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.