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Finding the Fourth Proportional to 161,609.82, 223,020.99 and 89,990.70

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Solution

The fourth proportional to 161,609.82, 223,020.99 and 89,990.70 is: 124,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,609.82 : 223,020.99 = 89,990.70 : x
  2. Step 2: Convert to fraction form
    161,609.82/223,020.99 = 89,990.70/x
  3. Step 3: Cross multiply
    161,609.82x = 223,020.99 × 89,990.70
  4. Step 4: Simplify right side
    161,609.82x = 20,069,815,004.79
  5. Step 5: Solve for x
    x = 20,069,815,004.79/161,609.82
  6. Step 6: Final answer
    x = 124,186.85

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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.