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Finding the Fourth Proportional to 80,950.75, 111,712.04 and 47,416.75

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Solution

The fourth proportional to 80,950.75, 111,712.04 and 47,416.75 is: 65,435.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.75 : 111,712.04 = 47,416.75 : x
  2. Step 2: Convert to fraction form
    80,950.75/111,712.04 = 47,416.75/x
  3. Step 3: Cross multiply
    80,950.75x = 111,712.04 × 47,416.75
  4. Step 4: Simplify right side
    80,950.75x = 5,297,021,872.67
  5. Step 5: Solve for x
    x = 5,297,021,872.67/80,950.75
  6. Step 6: Final answer
    x = 65,435.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.