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Finding the Fourth Proportional to 169,242.10, 253,797.54 and 90,313.26

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Solution

The fourth proportional to 169,242.10, 253,797.54 and 90,313.26 is: 135,434.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,242.10 : 253,797.54 = 90,313.26 : x
  2. Step 2: Convert to fraction form
    169,242.10/253,797.54 = 90,313.26/x
  3. Step 3: Cross multiply
    169,242.10x = 253,797.54 × 90,313.26
  4. Step 4: Simplify right side
    169,242.10x = 22,921,283,217.38
  5. Step 5: Solve for x
    x = 22,921,283,217.38/169,242.10
  6. Step 6: Final answer
    x = 135,434.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.