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Finding the Third Proportional to 21,635 and 31,601.50

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Solution

The third proportional to 21,635 and 31,601.50 is: 46,159.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635 : 31,601.50 = 31,601.50 : x
  2. Step 2: Convert to fraction form
    21,635/31,601.50 = 31,601.50/x
  3. Step 3: Cross multiply
    21,635x = 31,601.50 × 31,601.50
  4. Step 4: Simplify right side
    21,635x = 998,654,802.25
  5. Step 5: Solve for x
    x = 998,654,802.25/21,635
  6. Step 6: Final answer
    x = 46,159.22

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.