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Finding the Fourth Proportional to 262,106.72, 393,050.64 and 129,049.76

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Solution

The fourth proportional to 262,106.72, 393,050.64 and 129,049.76 is: 193,520.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,106.72 : 393,050.64 = 129,049.76 : x
  2. Step 2: Convert to fraction form
    262,106.72/393,050.64 = 129,049.76/x
  3. Step 3: Cross multiply
    262,106.72x = 393,050.64 × 129,049.76
  4. Step 4: Simplify right side
    262,106.72x = 50,723,090,759.85
  5. Step 5: Solve for x
    x = 50,723,090,759.85/262,106.72
  6. Step 6: Final answer
    x = 193,520.76

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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.