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Finding the Third Proportional to 915,546 and 1,988,712

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Solution

The third proportional to 915,546 and 1,988,712 is: 4,319,799.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,546 : 1,988,712 = 1,988,712 : x
  2. Step 2: Convert to fraction form
    915,546/1,988,712 = 1,988,712/x
  3. Step 3: Cross multiply
    915,546x = 1,988,712 × 1,988,712
  4. Step 4: Simplify right side
    915,546x = 3,954,975,418,944
  5. Step 5: Solve for x
    x = 3,954,975,418,944/915,546
  6. Step 6: Final answer
    x = 4,319,799.79

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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.