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Finding the Fourth Proportional to 235,960.40, 353,940.60 and 161,310.80

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Solution

The fourth proportional to 235,960.40, 353,940.60 and 161,310.80 is: 241,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,960.40 : 353,940.60 = 161,310.80 : x
  2. Step 2: Convert to fraction form
    235,960.40/353,940.60 = 161,310.80/x
  3. Step 3: Cross multiply
    235,960.40x = 353,940.60 × 161,310.80
  4. Step 4: Simplify right side
    235,960.40x = 57,094,441,338.48
  5. Step 5: Solve for x
    x = 57,094,441,338.48/235,960.40
  6. Step 6: Final answer
    x = 241,966.20

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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.