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Finding the Fourth Proportional to 1,828,979.77, 2,743,469.96 and 763,440.57

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Solution

The fourth proportional to 1,828,979.77, 2,743,469.96 and 763,440.57 is: 1,145,160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,828,979.77 : 2,743,469.96 = 763,440.57 : x
  2. Step 2: Convert to fraction form
    1,828,979.77/2,743,469.96 = 763,440.57/x
  3. Step 3: Cross multiply
    1,828,979.77x = 2,743,469.96 × 763,440.57
  4. Step 4: Simplify right side
    1,828,979.77x = 2,094,476,270,040.28
  5. Step 5: Solve for x
    x = 2,094,476,270,040.28/1,828,979.77
  6. Step 6: Final answer
    x = 1,145,160.98

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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.