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Finding the Fourth Proportional to 86,450.96, 129,734.76 and 33,853.88

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Solution

The fourth proportional to 86,450.96, 129,734.76 and 33,853.88 is: 50,803.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,450.96 : 129,734.76 = 33,853.88 : x
  2. Step 2: Convert to fraction form
    86,450.96/129,734.76 = 33,853.88/x
  3. Step 3: Cross multiply
    86,450.96x = 129,734.76 × 33,853.88
  4. Step 4: Simplify right side
    86,450.96x = 4,392,024,996.87
  5. Step 5: Solve for x
    x = 4,392,024,996.87/86,450.96
  6. Step 6: Final answer
    x = 50,803.66

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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.