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Finding the Fourth Proportional to 1,965,757.71, 2,713,582.71 and 1,321,551.54

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Solution

The fourth proportional to 1,965,757.71, 2,713,582.71 and 1,321,551.54 is: 1,824,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965,757.71 : 2,713,582.71 = 1,321,551.54 : x
  2. Step 2: Convert to fraction form
    1,965,757.71/2,713,582.71 = 1,321,551.54/x
  3. Step 3: Cross multiply
    1,965,757.71x = 2,713,582.71 × 1,321,551.54
  4. Step 4: Simplify right side
    1,965,757.71x = 3,586,139,409,317.87
  5. Step 5: Solve for x
    x = 3,586,139,409,317.87/1,965,757.71
  6. Step 6: Final answer
    x = 1,824,303.88

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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.