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Finding the Fourth Proportional to 16,855,825.80, 25,283,738.70 and 12,551,153.70

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Solution

The fourth proportional to 16,855,825.80, 25,283,738.70 and 12,551,153.70 is: 18,826,730.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,855,825.80 : 25,283,738.70 = 12,551,153.70 : x
  2. Step 2: Convert to fraction form
    16,855,825.80/25,283,738.70 = 12,551,153.70/x
  3. Step 3: Cross multiply
    16,855,825.80x = 25,283,738.70 × 12,551,153.70
  4. Step 4: Simplify right side
    16,855,825.80x = 317,340,090,534,338.19
  5. Step 5: Solve for x
    x = 317,340,090,534,338.19/16,855,825.80
  6. Step 6: Final answer
    x = 18,826,730.55

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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.