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Finding the Fourth Proportional to 547,760.88, 821,788.34 and 168,690.60

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Solution

The fourth proportional to 547,760.88, 821,788.34 and 168,690.60 is: 253,081.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,760.88 : 821,788.34 = 168,690.60 : x
  2. Step 2: Convert to fraction form
    547,760.88/821,788.34 = 168,690.60/x
  3. Step 3: Cross multiply
    547,760.88x = 821,788.34 × 168,690.60
  4. Step 4: Simplify right side
    547,760.88x = 138,627,967,304.15
  5. Step 5: Solve for x
    x = 138,627,967,304.15/547,760.88
  6. Step 6: Final answer
    x = 253,081.18

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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.