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Finding the Fourth Proportional to 89,795.82, 133,633.50 and 86,805.84

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Solution

The fourth proportional to 89,795.82, 133,633.50 and 86,805.84 is: 129,183.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,795.82 : 133,633.50 = 86,805.84 : x
  2. Step 2: Convert to fraction form
    89,795.82/133,633.50 = 86,805.84/x
  3. Step 3: Cross multiply
    89,795.82x = 133,633.50 × 86,805.84
  4. Step 4: Simplify right side
    89,795.82x = 11,600,168,219.64
  5. Step 5: Solve for x
    x = 11,600,168,219.64/89,795.82
  6. Step 6: Final answer
    x = 129,183.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.