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Finding the Fourth Proportional to 66,226.88, 99,338.10 and 28,786.92

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Solution

The fourth proportional to 66,226.88, 99,338.10 and 28,786.92 is: 43,179.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,226.88 : 99,338.10 = 28,786.92 : x
  2. Step 2: Convert to fraction form
    66,226.88/99,338.10 = 28,786.92/x
  3. Step 3: Cross multiply
    66,226.88x = 99,338.10 × 28,786.92
  4. Step 4: Simplify right side
    66,226.88x = 2,859,637,937.65
  5. Step 5: Solve for x
    x = 2,859,637,937.65/66,226.88
  6. Step 6: Final answer
    x = 43,179.42

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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.