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Finding the Fourth Proportional to 482,507.40, 665,939.92 and 267,716.66

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Solution

The fourth proportional to 482,507.40, 665,939.92 and 267,716.66 is: 369,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,507.40 : 665,939.92 = 267,716.66 : x
  2. Step 2: Convert to fraction form
    482,507.40/665,939.92 = 267,716.66/x
  3. Step 3: Cross multiply
    482,507.40x = 665,939.92 × 267,716.66
  4. Step 4: Simplify right side
    482,507.40x = 178,283,211,143.07
  5. Step 5: Solve for x
    x = 178,283,211,143.07/482,507.40
  6. Step 6: Final answer
    x = 369,493.22

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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.