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Finding the Fourth Proportional to 481,955.13, 665,127.45 and 278,002.26

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Solution

The fourth proportional to 481,955.13, 665,127.45 and 278,002.26 is: 383,660.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,955.13 : 665,127.45 = 278,002.26 : x
  2. Step 2: Convert to fraction form
    481,955.13/665,127.45 = 278,002.26/x
  3. Step 3: Cross multiply
    481,955.13x = 665,127.45 × 278,002.26
  4. Step 4: Simplify right side
    481,955.13x = 184,906,934,288.04
  5. Step 5: Solve for x
    x = 184,906,934,288.04/481,955.13
  6. Step 6: Final answer
    x = 383,660.06

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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.