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Finding the Fourth Proportional to 1,256,724.97, 1,734,228.66 and 683,767.42

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Solution

The fourth proportional to 1,256,724.97, 1,734,228.66 and 683,767.42 is: 943,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,724.97 : 1,734,228.66 = 683,767.42 : x
  2. Step 2: Convert to fraction form
    1,256,724.97/1,734,228.66 = 683,767.42/x
  3. Step 3: Cross multiply
    1,256,724.97x = 1,734,228.66 × 683,767.42
  4. Step 4: Simplify right side
    1,256,724.97x = 1,185,809,058,752.56
  5. Step 5: Solve for x
    x = 1,185,809,058,752.56/1,256,724.97
  6. Step 6: Final answer
    x = 943,570.86

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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.