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Finding the Fourth Proportional to 354,858.60, 532,287.90 and 325,828.20

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Solution

The fourth proportional to 354,858.60, 532,287.90 and 325,828.20 is: 488,742.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,858.60 : 532,287.90 = 325,828.20 : x
  2. Step 2: Convert to fraction form
    354,858.60/532,287.90 = 325,828.20/x
  3. Step 3: Cross multiply
    354,858.60x = 532,287.90 × 325,828.20
  4. Step 4: Simplify right side
    354,858.60x = 173,434,408,338.78
  5. Step 5: Solve for x
    x = 173,434,408,338.78/354,858.60
  6. Step 6: Final answer
    x = 488,742.30

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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.