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Finding the Fourth Proportional to 127,660,878.20, 191,491,317.30 and 127,660,878.20

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Solution

The fourth proportional to 127,660,878.20, 191,491,317.30 and 127,660,878.20 is: 191,491,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,660,878.20 : 191,491,317.30 = 127,660,878.20 : x
  2. Step 2: Convert to fraction form
    127,660,878.20/191,491,317.30 = 127,660,878.20/x
  3. Step 3: Cross multiply
    127,660,878.20x = 191,491,317.30 × 127,660,878.20
  4. Step 4: Simplify right side
    127,660,878.20x = 24,445,949,734,192,856
  5. Step 5: Solve for x
    x = 24,445,949,734,192,856/127,660,878.20
  6. Step 6: Final answer
    x = 191,491,317.30

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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.