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Finding the Fourth Proportional to 80,530.91, 111,137.79 and 44,720.91

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Solution

The fourth proportional to 80,530.91, 111,137.79 and 44,720.91 is: 61,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,530.91 : 111,137.79 = 44,720.91 : x
  2. Step 2: Convert to fraction form
    80,530.91/111,137.79 = 44,720.91/x
  3. Step 3: Cross multiply
    80,530.91x = 111,137.79 × 44,720.91
  4. Step 4: Simplify right side
    80,530.91x = 4,970,183,271.89
  5. Step 5: Solve for x
    x = 4,970,183,271.89/80,530.91
  6. Step 6: Final answer
    x = 61,717.71

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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.