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Finding the Third Proportional to 472,780 and 1,021,340

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Solution

The third proportional to 472,780 and 1,021,340 is: 2,206,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,780 : 1,021,340 = 1,021,340 : x
  2. Step 2: Convert to fraction form
    472,780/1,021,340 = 1,021,340/x
  3. Step 3: Cross multiply
    472,780x = 1,021,340 × 1,021,340
  4. Step 4: Simplify right side
    472,780x = 1,043,135,395,600
  5. Step 5: Solve for x
    x = 1,043,135,395,600/472,780
  6. Step 6: Final answer
    x = 2,206,386.47

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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.