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Finding the Fourth Proportional to 87,368,840.80, 131,053,261.20 and 87,368,840.80

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Solution

The fourth proportional to 87,368,840.80, 131,053,261.20 and 87,368,840.80 is: 131,053,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,368,840.80 : 131,053,261.20 = 87,368,840.80 : x
  2. Step 2: Convert to fraction form
    87,368,840.80/131,053,261.20 = 87,368,840.80/x
  3. Step 3: Cross multiply
    87,368,840.80x = 131,053,261.20 × 87,368,840.80
  4. Step 4: Simplify right side
    87,368,840.80x = 11,449,971,514,103,616
  5. Step 5: Solve for x
    x = 11,449,971,514,103,616/87,368,840.80
  6. Step 6: Final answer
    x = 131,053,261.20

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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.