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Finding the Third Proportional to 197,916.75 and 431,356.50

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Solution

The third proportional to 197,916.75 and 431,356.50 is: 940,134.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,916.75 : 431,356.50 = 431,356.50 : x
  2. Step 2: Convert to fraction form
    197,916.75/431,356.50 = 431,356.50/x
  3. Step 3: Cross multiply
    197,916.75x = 431,356.50 × 431,356.50
  4. Step 4: Simplify right side
    197,916.75x = 186,068,430,092.25
  5. Step 5: Solve for x
    x = 186,068,430,092.25/197,916.75
  6. Step 6: Final answer
    x = 940,134.83

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.