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Finding the Fourth Proportional to 1,225,996.11, 1,691,883 and 682,154.82

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Solution

The fourth proportional to 1,225,996.11, 1,691,883 and 682,154.82 is: 941,378.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,996.11 : 1,691,883 = 682,154.82 : x
  2. Step 2: Convert to fraction form
    1,225,996.11/1,691,883 = 682,154.82/x
  3. Step 3: Cross multiply
    1,225,996.11x = 1,691,883 × 682,154.82
  4. Step 4: Simplify right side
    1,225,996.11x = 1,154,126,143,326.06
  5. Step 5: Solve for x
    x = 1,154,126,143,326.06/1,225,996.11
  6. Step 6: Final answer
    x = 941,378.31

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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.