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Finding the Fourth Proportional to 1,321,717, 1,824,124.98 and 785,173

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Solution

The fourth proportional to 1,321,717, 1,824,124.98 and 785,173 is: 1,083,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,717 : 1,824,124.98 = 785,173 : x
  2. Step 2: Convert to fraction form
    1,321,717/1,824,124.98 = 785,173/x
  3. Step 3: Cross multiply
    1,321,717x = 1,824,124.98 × 785,173
  4. Step 4: Simplify right side
    1,321,717x = 1,432,253,682,921.54
  5. Step 5: Solve for x
    x = 1,432,253,682,921.54/1,321,717
  6. Step 6: Final answer
    x = 1,083,631.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.