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Finding the Fourth Proportional to 86,609.26, 119,493.57 and 50,800.78

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Solution

The fourth proportional to 86,609.26, 119,493.57 and 50,800.78 is: 70,089.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,609.26 : 119,493.57 = 50,800.78 : x
  2. Step 2: Convert to fraction form
    86,609.26/119,493.57 = 50,800.78/x
  3. Step 3: Cross multiply
    86,609.26x = 119,493.57 × 50,800.78
  4. Step 4: Simplify right side
    86,609.26x = 6,070,366,560.98
  5. Step 5: Solve for x
    x = 6,070,366,560.98/86,609.26
  6. Step 6: Final answer
    x = 70,089.12

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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.