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Finding the Third Proportional to 14,429 and 31,318

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Solution

The third proportional to 14,429 and 31,318 is: 67,975.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,429 : 31,318 = 31,318 : x
  2. Step 2: Convert to fraction form
    14,429/31,318 = 31,318/x
  3. Step 3: Cross multiply
    14,429x = 31,318 × 31,318
  4. Step 4: Simplify right side
    14,429x = 980,817,124
  5. Step 5: Solve for x
    x = 980,817,124/14,429
  6. Step 6: Final answer
    x = 67,975.41

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.