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Finding the Third Proportional to 987,551 and 2,122,423

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Solution

The third proportional to 987,551 and 2,122,423 is: 4,561,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,551 : 2,122,423 = 2,122,423 : x
  2. Step 2: Convert to fraction form
    987,551/2,122,423 = 2,122,423/x
  3. Step 3: Cross multiply
    987,551x = 2,122,423 × 2,122,423
  4. Step 4: Simplify right side
    987,551x = 4,504,679,390,929
  5. Step 5: Solve for x
    x = 4,504,679,390,929/987,551
  6. Step 6: Final answer
    x = 4,561,465.07

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.