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Finding the Third Proportional to 199,178.38 and 431,582

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Solution

The third proportional to 199,178.38 and 431,582 is: 935,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,178.38 : 431,582 = 431,582 : x
  2. Step 2: Convert to fraction form
    199,178.38/431,582 = 431,582/x
  3. Step 3: Cross multiply
    199,178.38x = 431,582 × 431,582
  4. Step 4: Simplify right side
    199,178.38x = 186,263,022,724
  5. Step 5: Solve for x
    x = 186,263,022,724/199,178.38
  6. Step 6: Final answer
    x = 935,156.85

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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.