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Finding the Fourth Proportional to 396,055.40, 594,077.70 and 129,824.60

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Solution

The fourth proportional to 396,055.40, 594,077.70 and 129,824.60 is: 194,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,055.40 : 594,077.70 = 129,824.60 : x
  2. Step 2: Convert to fraction form
    396,055.40/594,077.70 = 129,824.60/x
  3. Step 3: Cross multiply
    396,055.40x = 594,077.70 × 129,824.60
  4. Step 4: Simplify right side
    396,055.40x = 77,125,899,771.42
  5. Step 5: Solve for x
    x = 77,125,899,771.42/396,055.40
  6. Step 6: Final answer
    x = 194,735.13

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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.