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Finding the Fourth Proportional to 193,616.80, 290,425.20 and 178,453.60

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Solution

The fourth proportional to 193,616.80, 290,425.20 and 178,453.60 is: 267,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,616.80 : 290,425.20 = 178,453.60 : x
  2. Step 2: Convert to fraction form
    193,616.80/290,425.20 = 178,453.60/x
  3. Step 3: Cross multiply
    193,616.80x = 290,425.20 × 178,453.60
  4. Step 4: Simplify right side
    193,616.80x = 51,827,422,470.72
  5. Step 5: Solve for x
    x = 51,827,422,470.72/193,616.80
  6. Step 6: Final answer
    x = 267,680.40

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1.5x scale

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.