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Finding the Fourth Proportional to 1,288,305.22, 1,923,782.30 and 1,052,116.42

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Solution

The fourth proportional to 1,288,305.22, 1,923,782.30 and 1,052,116.42 is: 1,571,089.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,305.22 : 1,923,782.30 = 1,052,116.42 : x
  2. Step 2: Convert to fraction form
    1,288,305.22/1,923,782.30 = 1,052,116.42/x
  3. Step 3: Cross multiply
    1,288,305.22x = 1,923,782.30 × 1,052,116.42
  4. Step 4: Simplify right side
    1,288,305.22x = 2,024,042,946,335.37
  5. Step 5: Solve for x
    x = 2,024,042,946,335.37/1,288,305.22
  6. Step 6: Final answer
    x = 1,571,089.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.