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Finding the Fourth Proportional to 295,623.72, 407,960.10 and 161,487.72

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Solution

The fourth proportional to 295,623.72, 407,960.10 and 161,487.72 is: 222,852.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,623.72 : 407,960.10 = 161,487.72 : x
  2. Step 2: Convert to fraction form
    295,623.72/407,960.10 = 161,487.72/x
  3. Step 3: Cross multiply
    295,623.72x = 407,960.10 × 161,487.72
  4. Step 4: Simplify right side
    295,623.72x = 65,880,546,399.97
  5. Step 5: Solve for x
    x = 65,880,546,399.97/295,623.72
  6. Step 6: Final answer
    x = 222,852.71

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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.