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Finding the Third Proportional to 945,920 and 1,391,220

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Solution

The third proportional to 945,920 and 1,391,220 is: 2,046,148.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,920 : 1,391,220 = 1,391,220 : x
  2. Step 2: Convert to fraction form
    945,920/1,391,220 = 1,391,220/x
  3. Step 3: Cross multiply
    945,920x = 1,391,220 × 1,391,220
  4. Step 4: Simplify right side
    945,920x = 1,935,493,088,400
  5. Step 5: Solve for x
    x = 1,935,493,088,400/945,920
  6. Step 6: Final answer
    x = 2,046,148.82

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.