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Finding the Third Proportional to 106,431 and 163,639.50

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Solution

The third proportional to 106,431 and 163,639.50 is: 251,598.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,431 : 163,639.50 = 163,639.50 : x
  2. Step 2: Convert to fraction form
    106,431/163,639.50 = 163,639.50/x
  3. Step 3: Cross multiply
    106,431x = 163,639.50 × 163,639.50
  4. Step 4: Simplify right side
    106,431x = 26,777,885,960.25
  5. Step 5: Solve for x
    x = 26,777,885,960.25/106,431
  6. Step 6: Final answer
    x = 251,598.56

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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.