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Finding the Fourth Proportional to 539,765.10, 809,647.65 and 531,891.90

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Solution

The fourth proportional to 539,765.10, 809,647.65 and 531,891.90 is: 797,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,765.10 : 809,647.65 = 531,891.90 : x
  2. Step 2: Convert to fraction form
    539,765.10/809,647.65 = 531,891.90/x
  3. Step 3: Cross multiply
    539,765.10x = 809,647.65 × 531,891.90
  4. Step 4: Simplify right side
    539,765.10x = 430,645,026,889.04
  5. Step 5: Solve for x
    x = 430,645,026,889.04/539,765.10
  6. Step 6: Final answer
    x = 797,837.85

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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.