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Finding the Fourth Proportional to 297,357.36, 410,353.55 and 161,391.29

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Solution

The fourth proportional to 297,357.36, 410,353.55 and 161,391.29 is: 222,720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,357.36 : 410,353.55 = 161,391.29 : x
  2. Step 2: Convert to fraction form
    297,357.36/410,353.55 = 161,391.29/x
  3. Step 3: Cross multiply
    297,357.36x = 410,353.55 × 161,391.29
  4. Step 4: Simplify right side
    297,357.36x = 66,227,485,931.86
  5. Step 5: Solve for x
    x = 66,227,485,931.86/297,357.36
  6. Step 6: Final answer
    x = 222,720.18

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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.