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Finding the Fourth Proportional to 271,812.00, 407,686.33 and 72,147.91

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Solution

The fourth proportional to 271,812.00, 407,686.33 and 72,147.91 is: 108,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,812.00 : 407,686.33 = 72,147.91 : x
  2. Step 2: Convert to fraction form
    271,812.00/407,686.33 = 72,147.91/x
  3. Step 3: Cross multiply
    271,812.00x = 407,686.33 × 72,147.91
  4. Step 4: Simplify right side
    271,812.00x = 29,413,714,787.01
  5. Step 5: Solve for x
    x = 29,413,714,787.01/271,812.00
  6. Step 6: Final answer
    x = 108,213.45

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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.