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Finding the Fourth Proportional to 213,062.60, 319,593.90 and 134,265.80

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Solution

The fourth proportional to 213,062.60, 319,593.90 and 134,265.80 is: 201,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,062.60 : 319,593.90 = 134,265.80 : x
  2. Step 2: Convert to fraction form
    213,062.60/319,593.90 = 134,265.80/x
  3. Step 3: Cross multiply
    213,062.60x = 319,593.90 × 134,265.80
  4. Step 4: Simplify right side
    213,062.60x = 42,910,530,658.62
  5. Step 5: Solve for x
    x = 42,910,530,658.62/213,062.60
  6. Step 6: Final answer
    x = 201,398.70

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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.