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Finding the Third Proportional to 291,247 and 441,381

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Solution

The third proportional to 291,247 and 441,381 is: 668,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,247 : 441,381 = 441,381 : x
  2. Step 2: Convert to fraction form
    291,247/441,381 = 441,381/x
  3. Step 3: Cross multiply
    291,247x = 441,381 × 441,381
  4. Step 4: Simplify right side
    291,247x = 194,817,187,161
  5. Step 5: Solve for x
    x = 194,817,187,161/291,247
  6. Step 6: Final answer
    x = 668,907.10

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.