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Finding the Third Proportional to 196,903 and 431,947

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Solution

The third proportional to 196,903 and 431,947 is: 947,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,903 : 431,947 = 431,947 : x
  2. Step 2: Convert to fraction form
    196,903/431,947 = 431,947/x
  3. Step 3: Cross multiply
    196,903x = 431,947 × 431,947
  4. Step 4: Simplify right side
    196,903x = 186,578,210,809
  5. Step 5: Solve for x
    x = 186,578,210,809/196,903
  6. Step 6: Final answer
    x = 947,564.08

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.