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Finding the Third Proportional to 37,153.50 and 77,979

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Solution

The third proportional to 37,153.50 and 77,979 is: 163,664.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,153.50 : 77,979 = 77,979 : x
  2. Step 2: Convert to fraction form
    37,153.50/77,979 = 77,979/x
  3. Step 3: Cross multiply
    37,153.50x = 77,979 × 77,979
  4. Step 4: Simplify right side
    37,153.50x = 6,080,724,441
  5. Step 5: Solve for x
    x = 6,080,724,441/37,153.50
  6. Step 6: Final answer
    x = 163,664.92

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.