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Finding the Fourth Proportional to 289,170.73, 399,055.56 and 161,846.32

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Solution

The fourth proportional to 289,170.73, 399,055.56 and 161,846.32 is: 223,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,170.73 : 399,055.56 = 161,846.32 : x
  2. Step 2: Convert to fraction form
    289,170.73/399,055.56 = 161,846.32/x
  3. Step 3: Cross multiply
    289,170.73x = 399,055.56 × 161,846.32
  4. Step 4: Simplify right side
    289,170.73x = 64,585,673,861.54
  5. Step 5: Solve for x
    x = 64,585,673,861.54/289,170.73
  6. Step 6: Final answer
    x = 223,347.90

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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.