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Finding the Fourth Proportional to 161,309.87, 222,607.10 and 89,689.87

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Solution

The fourth proportional to 161,309.87, 222,607.10 and 89,689.87 is: 123,771.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,309.87 : 222,607.10 = 89,689.87 : x
  2. Step 2: Convert to fraction form
    161,309.87/222,607.10 = 89,689.87/x
  3. Step 3: Cross multiply
    161,309.87x = 222,607.10 × 89,689.87
  4. Step 4: Simplify right side
    161,309.87x = 19,965,601,860.08
  5. Step 5: Solve for x
    x = 19,965,601,860.08/161,309.87
  6. Step 6: Final answer
    x = 123,771.73

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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.