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Finding the Fourth Proportional to 481,681.33, 664,720.17 and 266,835.31

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Solution

The fourth proportional to 481,681.33, 664,720.17 and 266,835.31 is: 368,232.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,681.33 : 664,720.17 = 266,835.31 : x
  2. Step 2: Convert to fraction form
    481,681.33/664,720.17 = 266,835.31/x
  3. Step 3: Cross multiply
    481,681.33x = 664,720.17 × 266,835.31
  4. Step 4: Simplify right side
    481,681.33x = 177,370,812,625.20
  5. Step 5: Solve for x
    x = 177,370,812,625.20/481,681.33
  6. Step 6: Final answer
    x = 368,232.69

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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.