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Finding the Fourth Proportional to 267,716.88, 401,448.29 and 155,431.98

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Solution

The fourth proportional to 267,716.88, 401,448.29 and 155,431.98 is: 233,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,716.88 : 401,448.29 = 155,431.98 : x
  2. Step 2: Convert to fraction form
    267,716.88/401,448.29 = 155,431.98/x
  3. Step 3: Cross multiply
    267,716.88x = 401,448.29 × 155,431.98
  4. Step 4: Simplify right side
    267,716.88x = 62,397,901,805.15
  5. Step 5: Solve for x
    x = 62,397,901,805.15/267,716.88
  6. Step 6: Final answer
    x = 233,074.22

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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.