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Finding the Fourth Proportional to 223,891.20, 336,225.60 and 118,915.20

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Solution

The fourth proportional to 223,891.20, 336,225.60 and 118,915.20 is: 178,579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,891.20 : 336,225.60 = 118,915.20 : x
  2. Step 2: Convert to fraction form
    223,891.20/336,225.60 = 118,915.20/x
  3. Step 3: Cross multiply
    223,891.20x = 336,225.60 × 118,915.20
  4. Step 4: Simplify right side
    223,891.20x = 39,982,334,469.12
  5. Step 5: Solve for x
    x = 39,982,334,469.12/223,891.20
  6. Step 6: Final answer
    x = 178,579.30

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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.