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Finding the Fourth Proportional to 235,940.80, 353,911.20 and 147,467.20

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Solution

The fourth proportional to 235,940.80, 353,911.20 and 147,467.20 is: 221,200.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,940.80 : 353,911.20 = 147,467.20 : x
  2. Step 2: Convert to fraction form
    235,940.80/353,911.20 = 147,467.20/x
  3. Step 3: Cross multiply
    235,940.80x = 353,911.20 × 147,467.20
  4. Step 4: Simplify right side
    235,940.80x = 52,190,293,712.64
  5. Step 5: Solve for x
    x = 52,190,293,712.64/235,940.80
  6. Step 6: Final answer
    x = 221,200.80

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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.