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Finding the Fourth Proportional to 391,863.04, 540,777.17 and 219,819.25

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Solution

The fourth proportional to 391,863.04, 540,777.17 and 219,819.25 is: 303,354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,863.04 : 540,777.17 = 219,819.25 : x
  2. Step 2: Convert to fraction form
    391,863.04/540,777.17 = 219,819.25/x
  3. Step 3: Cross multiply
    391,863.04x = 540,777.17 × 219,819.25
  4. Step 4: Simplify right side
    391,863.04x = 118,873,231,926.52
  5. Step 5: Solve for x
    x = 118,873,231,926.52/391,863.04
  6. Step 6: Final answer
    x = 303,354.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.