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Finding the Fourth Proportional to 14,093,872.80, 21,140,809.20 and 11,904,151.20

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Solution

The fourth proportional to 14,093,872.80, 21,140,809.20 and 11,904,151.20 is: 17,856,226.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,093,872.80 : 21,140,809.20 = 11,904,151.20 : x
  2. Step 2: Convert to fraction form
    14,093,872.80/21,140,809.20 = 11,904,151.20/x
  3. Step 3: Cross multiply
    14,093,872.80x = 21,140,809.20 × 11,904,151.20
  4. Step 4: Simplify right side
    14,093,872.80x = 251,663,389,207,151
  5. Step 5: Solve for x
    x = 251,663,389,207,151/14,093,872.80
  6. Step 6: Final answer
    x = 17,856,226.80

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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.