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Finding the Fourth Proportional to 1,202,821.84, 1,659,264.31 and 743,789.98

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Solution

The fourth proportional to 1,202,821.84, 1,659,264.31 and 743,789.98 is: 1,026,040.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202,821.84 : 1,659,264.31 = 743,789.98 : x
  2. Step 2: Convert to fraction form
    1,202,821.84/1,659,264.31 = 743,789.98/x
  3. Step 3: Cross multiply
    1,202,821.84x = 1,659,264.31 × 743,789.98
  4. Step 4: Simplify right side
    1,202,821.84x = 1,234,144,167,949.61
  5. Step 5: Solve for x
    x = 1,234,144,167,949.61/1,202,821.84
  6. Step 6: Final answer
    x = 1,026,040.70

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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.