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Finding the Third Proportional to 720,819 and 1,573,911

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Solution

The third proportional to 720,819 and 1,573,911 is: 3,436,640.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,819 : 1,573,911 = 1,573,911 : x
  2. Step 2: Convert to fraction form
    720,819/1,573,911 = 1,573,911/x
  3. Step 3: Cross multiply
    720,819x = 1,573,911 × 1,573,911
  4. Step 4: Simplify right side
    720,819x = 2,477,195,835,921
  5. Step 5: Solve for x
    x = 2,477,195,835,921/720,819
  6. Step 6: Final answer
    x = 3,436,640.59

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.