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Finding the Fourth Proportional to 126,859,400.80, 177,961,479.20 and 126,859,400.80

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Solution

The fourth proportional to 126,859,400.80, 177,961,479.20 and 126,859,400.80 is: 177,961,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,859,400.80 : 177,961,479.20 = 126,859,400.80 : x
  2. Step 2: Convert to fraction form
    126,859,400.80/177,961,479.20 = 126,859,400.80/x
  3. Step 3: Cross multiply
    126,859,400.80x = 177,961,479.20 × 126,859,400.80
  4. Step 4: Simplify right side
    126,859,400.80x = 22,576,086,616,793,660
  5. Step 5: Solve for x
    x = 22,576,086,616,793,660/126,859,400.80
  6. Step 6: Final answer
    x = 177,961,479.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.