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Finding the Fourth Proportional to 272,173,786.20, 408,260,679.30 and 272,173,786.20

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Solution

The fourth proportional to 272,173,786.20, 408,260,679.30 and 272,173,786.20 is: 408,260,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,173,786.20 : 408,260,679.30 = 272,173,786.20 : x
  2. Step 2: Convert to fraction form
    272,173,786.20/408,260,679.30 = 272,173,786.20/x
  3. Step 3: Cross multiply
    272,173,786.20x = 408,260,679.30 × 272,173,786.20
  4. Step 4: Simplify right side
    272,173,786.20x = 111,117,854,841,664,960
  5. Step 5: Solve for x
    x = 111,117,854,841,664,960/272,173,786.20
  6. Step 6: Final answer
    x = 408,260,679.30

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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.