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Finding the Fourth Proportional to 378,591, 567,720.18 and 141,767.55

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Solution

The fourth proportional to 378,591, 567,720.18 and 141,767.55 is: 212,589.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,591 : 567,720.18 = 141,767.55 : x
  2. Step 2: Convert to fraction form
    378,591/567,720.18 = 141,767.55/x
  3. Step 3: Cross multiply
    378,591x = 567,720.18 × 141,767.55
  4. Step 4: Simplify right side
    378,591x = 80,484,299,004.16
  5. Step 5: Solve for x
    x = 80,484,299,004.16/378,591
  6. Step 6: Final answer
    x = 212,589.04

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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.