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Finding the Third Proportional to 1,920,490 and 4,138,717

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Solution

The third proportional to 1,920,490 and 4,138,717 is: 8,919,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,490 : 4,138,717 = 4,138,717 : x
  2. Step 2: Convert to fraction form
    1,920,490/4,138,717 = 4,138,717/x
  3. Step 3: Cross multiply
    1,920,490x = 4,138,717 × 4,138,717
  4. Step 4: Simplify right side
    1,920,490x = 17,128,978,406,089
  5. Step 5: Solve for x
    x = 17,128,978,406,089/1,920,490
  6. Step 6: Final answer
    x = 8,919,066.70

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.