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Finding the Fourth Proportional to 129,199.45, 193,827.12 and 39,234.77

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Solution

The fourth proportional to 129,199.45, 193,827.12 and 39,234.77 is: 58,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,199.45 : 193,827.12 = 39,234.77 : x
  2. Step 2: Convert to fraction form
    129,199.45/193,827.12 = 39,234.77/x
  3. Step 3: Cross multiply
    129,199.45x = 193,827.12 × 39,234.77
  4. Step 4: Simplify right side
    129,199.45x = 7,604,762,472.96
  5. Step 5: Solve for x
    x = 7,604,762,472.96/129,199.45
  6. Step 6: Final answer
    x = 58,860.64

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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.