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Finding the Fourth Proportional to 1,888,764.28, 2,606,496.67 and 1,029,325.22

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Solution

The fourth proportional to 1,888,764.28, 2,606,496.67 and 1,029,325.22 is: 1,420,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,764.28 : 2,606,496.67 = 1,029,325.22 : x
  2. Step 2: Convert to fraction form
    1,888,764.28/2,606,496.67 = 1,029,325.22/x
  3. Step 3: Cross multiply
    1,888,764.28x = 2,606,496.67 × 1,029,325.22
  4. Step 4: Simplify right side
    1,888,764.28x = 2,682,932,756,305.55
  5. Step 5: Solve for x
    x = 2,682,932,756,305.55/1,888,764.28
  6. Step 6: Final answer
    x = 1,420,469.87

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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.