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Finding the Fourth Proportional to 534,734.40, 801,712.80 and 219,028.80

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Solution

The fourth proportional to 534,734.40, 801,712.80 and 219,028.80 is: 328,383.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,734.40 : 801,712.80 = 219,028.80 : x
  2. Step 2: Convert to fraction form
    534,734.40/801,712.80 = 219,028.80/x
  3. Step 3: Cross multiply
    534,734.40x = 801,712.80 × 219,028.80
  4. Step 4: Simplify right side
    534,734.40x = 175,598,192,528.64
  5. Step 5: Solve for x
    x = 175,598,192,528.64/534,734.40
  6. Step 6: Final answer
    x = 328,383.95

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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.