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Finding the Fourth Proportional to 547,867, 821,882.27 and 168,756

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Solution

The fourth proportional to 547,867, 821,882.27 and 168,756 is: 253,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,867 : 821,882.27 = 168,756 : x
  2. Step 2: Convert to fraction form
    547,867/821,882.27 = 168,756/x
  3. Step 3: Cross multiply
    547,867x = 821,882.27 × 168,756
  4. Step 4: Simplify right side
    547,867x = 138,697,564,356.12
  5. Step 5: Solve for x
    x = 138,697,564,356.12/547,867
  6. Step 6: Final answer
    x = 253,159.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.