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Finding the Fourth Proportional to 263,529.60, 395,332.74 and 85,992.90

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Solution

The fourth proportional to 263,529.60, 395,332.74 and 85,992.90 is: 129,001.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,529.60 : 395,332.74 = 85,992.90 : x
  2. Step 2: Convert to fraction form
    263,529.60/395,332.74 = 85,992.90/x
  3. Step 3: Cross multiply
    263,529.60x = 395,332.74 × 85,992.90
  4. Step 4: Simplify right side
    263,529.60x = 33,995,808,777.55
  5. Step 5: Solve for x
    x = 33,995,808,777.55/263,529.60
  6. Step 6: Final answer
    x = 129,001.86

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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.