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Finding the Third Proportional to 147,972 and 326,106

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Solution

The third proportional to 147,972 and 326,106 is: 718,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,972 : 326,106 = 326,106 : x
  2. Step 2: Convert to fraction form
    147,972/326,106 = 326,106/x
  3. Step 3: Cross multiply
    147,972x = 326,106 × 326,106
  4. Step 4: Simplify right side
    147,972x = 106,345,123,236
  5. Step 5: Solve for x
    x = 106,345,123,236/147,972
  6. Step 6: Final answer
    x = 718,684.10

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.