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Finding the Fourth Proportional to 892,647, 1,231,965.18 and 553,166.28

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Solution

The fourth proportional to 892,647, 1,231,965.18 and 553,166.28 is: 763,439.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,647 : 1,231,965.18 = 553,166.28 : x
  2. Step 2: Convert to fraction form
    892,647/1,231,965.18 = 553,166.28/x
  3. Step 3: Cross multiply
    892,647x = 1,231,965.18 × 553,166.28
  4. Step 4: Simplify right side
    892,647x = 681,481,595,710.13
  5. Step 5: Solve for x
    x = 681,481,595,710.13/892,647
  6. Step 6: Final answer
    x = 763,439.07

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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.