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Finding the Third Proportional to 907,420 and 1,392,854

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Solution

The third proportional to 907,420 and 1,392,854 is: 2,137,976.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,420 : 1,392,854 = 1,392,854 : x
  2. Step 2: Convert to fraction form
    907,420/1,392,854 = 1,392,854/x
  3. Step 3: Cross multiply
    907,420x = 1,392,854 × 1,392,854
  4. Step 4: Simplify right side
    907,420x = 1,940,042,265,316
  5. Step 5: Solve for x
    x = 1,940,042,265,316/907,420
  6. Step 6: Final answer
    x = 2,137,976.09

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.