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Finding the Third Proportional to 163,721.25 and 361,854

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Solution

The third proportional to 163,721.25 and 361,854 is: 799,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,721.25 : 361,854 = 361,854 : x
  2. Step 2: Convert to fraction form
    163,721.25/361,854 = 361,854/x
  3. Step 3: Cross multiply
    163,721.25x = 361,854 × 361,854
  4. Step 4: Simplify right side
    163,721.25x = 130,938,317,316
  5. Step 5: Solve for x
    x = 130,938,317,316/163,721.25
  6. Step 6: Final answer
    x = 799,763.73

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.