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Finding the Fourth Proportional to 1,197,664.80, 1,793,872.80 and 1,040,200.80

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Solution

The fourth proportional to 1,197,664.80, 1,793,872.80 and 1,040,200.80 is: 1,558,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197,664.80 : 1,793,872.80 = 1,040,200.80 : x
  2. Step 2: Convert to fraction form
    1,197,664.80/1,793,872.80 = 1,040,200.80/x
  3. Step 3: Cross multiply
    1,197,664.80x = 1,793,872.80 × 1,040,200.80
  4. Step 4: Simplify right side
    1,197,664.80x = 1,865,987,921,658.24
  5. Step 5: Solve for x
    x = 1,865,987,921,658.24/1,197,664.80
  6. Step 6: Final answer
    x = 1,558,021.85

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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.