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Finding the Fourth Proportional to 1,916,991.69, 2,873,972.43 and 956,954.58

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Solution

The fourth proportional to 1,916,991.69, 2,873,972.43 and 956,954.58 is: 1,434,675.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,991.69 : 2,873,972.43 = 956,954.58 : x
  2. Step 2: Convert to fraction form
    1,916,991.69/2,873,972.43 = 956,954.58/x
  3. Step 3: Cross multiply
    1,916,991.69x = 2,873,972.43 × 956,954.58
  4. Step 4: Simplify right side
    1,916,991.69x = 2,750,261,079,682.23
  5. Step 5: Solve for x
    x = 2,750,261,079,682.23/1,916,991.69
  6. Step 6: Final answer
    x = 1,434,675.54

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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.