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Finding the Fourth Proportional to 267,186.48, 400,786.20 and 89,699.28

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Solution

The fourth proportional to 267,186.48, 400,786.20 and 89,699.28 is: 134,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,186.48 : 400,786.20 = 89,699.28 : x
  2. Step 2: Convert to fraction form
    267,186.48/400,786.20 = 89,699.28/x
  3. Step 3: Cross multiply
    267,186.48x = 400,786.20 × 89,699.28
  4. Step 4: Simplify right side
    267,186.48x = 35,950,233,573.94
  5. Step 5: Solve for x
    x = 35,950,233,573.94/267,186.48
  6. Step 6: Final answer
    x = 134,551.10

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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.