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Finding the Fourth Proportional to 481,661.12, 664,626.56 and 266,748.16

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Solution

The fourth proportional to 481,661.12, 664,626.56 and 266,748.16 is: 368,076.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,661.12 : 664,626.56 = 266,748.16 : x
  2. Step 2: Convert to fraction form
    481,661.12/664,626.56 = 266,748.16/x
  3. Step 3: Cross multiply
    481,661.12x = 664,626.56 × 266,748.16
  4. Step 4: Simplify right side
    481,661.12x = 177,287,911,967.13
  5. Step 5: Solve for x
    x = 177,287,911,967.13/481,661.12
  6. Step 6: Final answer
    x = 368,076.03

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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.