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Finding the Fourth Proportional to 354,912.40, 532,368.60 and 236,198.80

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Solution

The fourth proportional to 354,912.40, 532,368.60 and 236,198.80 is: 354,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,912.40 : 532,368.60 = 236,198.80 : x
  2. Step 2: Convert to fraction form
    354,912.40/532,368.60 = 236,198.80/x
  3. Step 3: Cross multiply
    354,912.40x = 532,368.60 × 236,198.80
  4. Step 4: Simplify right side
    354,912.40x = 125,744,824,477.68
  5. Step 5: Solve for x
    x = 125,744,824,477.68/354,912.40
  6. Step 6: Final answer
    x = 354,298.20

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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.